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No way. Being Catholic and being a scientist cannot be a contradiction. See the list of some of the Catholic scientists.Maria Gaetana Agnesi (1718–1799) – Mathematician who wrote on differential and integral calculusGeorgius Agricola (1494–1555) – Father of mineralogyAlbertus Magnus (c.1206–1280) – Patron saint of natural sciencesMariano Artigas (1938–2006) – Spanish physicist, philosopher and theologian who received the Templeton Foundation Prize in 1995André-Marie Ampère (1775–1836) – One of the main discoverers of electromagnetismLeopold Auenbrugger (1722-1809) – First to use percussion as a diagnostic technique in medicineAdrien Auzout (1622-1691) – Astronomer who contributed to the development of the telescopic micrometerAmedeo Avogadro (1776–1856) – Noted for contributions to molecular theory and Avogadro's LawFrancisco J. Ayala (1934–present) – Spanish-American biologist and philosopher at the University of California, IrvineRoger Bacon (c. 1214–1294) – Franciscan friar and early advocate of the scientific methodStephen M. Barr (1953–present) – Professor in the Department of Physics and Astronomy at the University of Delaware and a member of itsBartol Research InstituteDaniello Bartoli (1608–1685) – Jesuit priest and one of the first to see the equatorial belts of JupiterLaura Bassi (1711–1778) – Physicist at the University of Bologna and Chair in experimental physics at the Bologna Institute of Sciences, the first woman to be offered a professorship at a European universityAntoine César Becquerel (1788–1878) – Pioneer in the study of electric and luminescent phenomenaHenri Becquerel (1852–1908) – Awarded the Nobel Prize in physics for his co-discovery of radioactivityJohn Desmond Bernal (1901–1971) – British pioneer in X-ray crystallography in molecular biology.Claude Bernard (1813–1878) - Physiologist who helped to apply scientific methodology to medicineJacques Philippe Marie Binet (1786–1856) – Mathematician known for Binet's formula and his contributions to number theoryJean-Baptiste Biot (1774–1862) – Physicist who established the reality of meteorites and studied polarization of lightBernard Bolzano (1781–1848) – Priest and mathematician who contributed to differentiation, the concept of infinity, and the binomial theoremGiovanni Alfonso Borelli (1608–1679) – Often referred to as the father of modern biomechanicsRoger Joseph Boscovich (1711–1787) – Jesuit priest and polymath known for his atomic theory and many other scientific contributionsRaoul Bott (1923–2005) – Mathematician known for numerous basic contributions to geometry in its broad sense.Thomas Bradwardine (c.1290–1349) – Archbishop and one of the discoverers of the mean speed theoremLouis Braille (1809–1852) – Inventor of the Braille reading and writing systemEdouard Branly (1844-1940) – Inventor and physicist known for his involvement in wireless telegraphy and his invention of the Branly cohererMartin Stanislaus Brennan (1845–1927) – Priest, astronomer and writerJames Britten (1846–1924) – Botanist, member of the Catholic Truth Society and Knight Commander of the Order of St. Gregory the Great.Hermann Brück (1905-2000) – Astronomer Royal for Scotland from 1957-1975; honored by Pope John Paul IIAlbert Brudzewski (c. 1445-c.1497) – First to state that the Moon moves in an ellipseJean Buridan (c.1300–after 1358) – French priest who developed the theory of impetusAlexis Carrel (1873–1944) – Awarded the Nobel Prize in Medicine for pioneering vascular suturing techniquesJohn Casey (mathematician) (1820–1891) – Irish geometer known for Casey's theoremGiovanni Domenico Cassini (1625–1712) – First to observe four of Saturn's moons and the co-discoverer of the Great Red Spot on JupiterAugustin-Louis Cauchy (1789–1857) – Mathematician who was an early pioneer in analysisBonaventura Cavalieri (1598–1647) – Mathematician known for his work in optics and motion, calculus, and for introducing logarithms to ItalyAndrea Cesalpino (c.1525–1603) – Botanist who also theorized on the circulation of bloodJean-François Champollion (1790–1832) – Published the first translation of the Rosetta StoneGuy de Chauliac (c.1300–1368) – The most eminent surgeon of the Middle AgesAlbert Claude (1899–1983) – Awarded the Nobel Prize in Medicine for his contributions to cytologyChristopher Clavius (1538–1612) – Jesuit who was the main architect of the Gregorian calendarMateo Realdo Colombo (1516–1559) – Discovered the pulmonary circuit, which paved the way for Harvey's discovery of circulationCarl Ferdinand Cori (1896–1984) – Shared the 1947 Nobel Prize in Physiology or Medicine with his wife for their discovery of the Cori cycleGerty Cori (1896–1957) – Biochemist who was the first American woman win a Nobel Prize in science (1947)Gaspard-Gustave Coriolis (1792–1843) – Formulated laws regarding rotating systems, which later became known as the Corialis effectCharles-Augustin de Coulomb (1736–1806) – Physicist known for developing Coulomb's lawNicolaus Copernicus (1473–1543) – First person to formulate a comprehensive heliocentric cosmologyJohann Baptist Cysat (c.1587–1657) – Jesuit priest known for his study of cometsRené Descartes (1596–1650) – Father of modern philosophy and analytic geometryJohann Peter Gustav Lejeune Dirichlet (1805-1859) – Mathematicians who contributed to number theory and was one of the first to give the modern formal definition of a functionAlberto Dou (1915-2009), Spanish Jesuit priest who was president of the Royal Society of Mathematics, member of the Royal Academy of Natural, Physical, and Exact Sciences, and one of the foremost mathematicians of his country.Pierre Duhem (1861–1916) – Historian of science who made important contributions to hydrodynamics, elasticity, and thermodynamicsJean-Baptiste Dumas (1800–1884) – Chemist who established new values for the atomic mass of thirty elementsJohn Eccles (1903–1997) – Awarded the Nobel Prize in Medicine for his work on the synapseGerhard Ertl (1936– ) – German physicist who won the 2007 Nobel Prize in Chemistry for his studies of chemical processes on solid surfacesStephan Endlicher (1804–1849) – Botanist who formulated a major system of plant classificationBartolomeo Eustachi (c.1500–1574) – One of the founders of human anatomyHieronymus Fabricius (1537–1619) – Father of embryologyGabriele Falloppio (1523–1562) – Pioneering Italian anatomist who studied the human ear and reproductive organsMary Celine Fasenmyer (1906–1996) – Roman Catholic sister and mathematician, founder of Sister Celine's polynomialsHervé Faye (1814-1902) – Astronomer whose discovery of the periodic comet 4P/Faye won him the 1844 Lalande Prize and membership in the French Academy of SciencesPierre de Fermat (1601–1665) – Number theorist who contributed to the early development of calculusEnrico Fermi (1901–1954) – Awarded the Nobel Prize in physics for his work in induced radioactivityJean Fernel (1497-1558) – Physician who introduced the term physiologyFibonacci (c.1170–c.1250) – Popularized Hindu-Arabic numerals in Europe and discovered the Fibonacci sequenceHippolyte Fizeau (1819–1896) – The first person to determine experimentally the velocity of lightLéon Foucault (1819–1868) – Invented the Foucault pendulum to measure the effect of the earth's rotationJoseph von Fraunhofer (1787–1826) – Discovered Fraunhofer lines in the sun's spectrumAugustin-Jean Fresnel (1788–1827) – Made significant contributions to the theory of wave opticsGalileo Galilei (1564–1642) – Father of modern scienceLuigi Galvani (1737–1798) – Formulated the theory of animal electricityWilliam Gascoigne (1610-1644) – Developed the first micrometerPierre Gassendi (1592–1655) – French astronomer and mathematician who studied the transit of Mercury and named the aurora borealisJoseph Louis Gay-Lussac (1778–1850) – Chemist known for two laws related to gasesRiccardo Giacconi (1931– ) – Nobel Prize-winning astrophysicist who laid the foundations of X-ray astronomyCamillo Golgi (1843–1926) – Nobel Prize-winning pathologist and physicianPaula González (1932–present) – Roman Catholic sister and professor of biologyFrancesco Maria Grimaldi (1618–1663) – Jesuit who discovered the diffraction of lightRobert Grosseteste (c.1175–1253) – Called "the first man to write down a complete set of steps for performing a scientific experiment."Peter Grünberg (1939– ) – German physicist, and Nobel Prize in Physics laureate.Johannes Gutenberg (c.1398–1468) – Inventor of the printing pressJean Baptiste Julien d'Omalius d'Halloy (1783–1875) – One of the pioneers of modern geologyJohn Harsanyi (1929–2000) – Hungarian-American economist and Nobel Memorial Prize in Economic Sciences winner.René Just Haüy (1743–1822) – Priest and father of crystallographyEduard Heis (1806–1877) – Astronomer who contributed the first true delineation of the Milky WayJan Baptist van Helmont (1579–1644) – Founder of pneumatic chemistryGeorge de Hevesy (1885–1966) – Hungarian radiochemist and Nobel laureate.Charles Hermite (1822–1901) – Mathematician who did research on number theory, quadratic forms, elliptic functions, and algebraJohn Philip Holland (1840–1914) – Developed the first submarine to be formally commissioned by the U.S. NavyAntoine Laurent de Jussieu (1748–1836) – The first to propose a natural classification of flowering plantsMary Kenneth Keller (c.1914–1985) – Sister of Charity and first American woman to earn a PhD in computer science, who helped develop BASICEusebio Kino (1645 - 1711) - Jesuit missionary and cartographer who drew maps based on his explorations first showing that California was not an island as then believed.Athanasius Kircher (c.1601–1680) – Jesuit scholar who has been called "the last Renaissance man"Brian Kobilka (1955– ) – American Nobel Prize winning professor who teaches at Stanford University School of Medicine.Nicolas Louis de Lacaille (1713–1762) – French astronomer noted for cataloguing stars, nebulous objects, and constellationsRené Laennec (1781–1826) – Physician who invented the stethoscopeJoseph Louis Lagrange (1736–1813) – Mathematician and astronomer known for Lagrangian points and Lagrangian mechanicsJean-Baptiste Lamarck (1744–1829) – French naturalist, biologist and academic whose theories on evolution preceded those of DarwinJohann von Lamont (1805-1879) – Astronomer and physicist who studied the magnetism of the Earth and was the first to calculate the mass of UranusKarl Landsteiner (1868–1943) – Nobel Prize winner who identified and classified the human blood typesPierre André Latreille (1762–1833) – Pioneer in entomologyAntoine Lavoisier (1743–1794) – Father of modern chemistryJérôme Lejeune (1926–1994) – Pediatrician and geneticist, best known for his discovery of the link of diseases to chromosome abnormalitiesGeorges Lemaître (1894–1966) – Father of the Big Bang theoryAnthony James Leggett (1938– ) – His pioneering work on superfluidity was recognized by the 2003 Nobel Prize in Physics.Marcello Malpighi (1628–1694) – Father of comparative physiologyÉtienne-Louis Malus (1775–1812) – Discovered the polarization of lightAnna Morandi Manzolini (1714–1774) – Anatomist and anatomical wax artist who lectured at the University of BolognaGiovanni Manzolini (1700-1755) – Anatomical wax artist and Professor of anatomy at the University of BolognaGuglielmo Marconi (1874–1937) – Father of long-distance radio transmissionEdme Mariotte (c.1620–1684) – Priest who independently discovered Boyle's LawPierre Louis Maupertuis (1698–1759) – Known for the Maupertuis principle and for being the first president of the Berlin Academy of ScienceCraig Mello (1960– ) – American biologist who was awarded the 2006 Nobel Prize, with Andrew Fire, for the discovery of RNA interference.Gregor Mendel (1822–1884) – Father of geneticsMichele Mercati (1541-1593) – One of the first to recognize prehistoric stone tools as man-madeMarin Mersenne (1588–1648) – Father of acoustics and mathematician for whom Mersenne primes are named.Charles W. Misner (1932–present) – American cosmologist dedicated to the study of general relativityKenneth R. Miller (1948–present) – American cell biologist and molecular biologist who teaches at Brown University.Mario J. Molina (1943–present) - Mexican chemist and one of the precursors to the discovery of the Antarctic ozone hole (1995 Nobel Prize in Chemistry).Peter Joseph Moloney (1891-1989) -Canadian immunologist and pioneering vaccine researcher, who worked out the first large-scale purification of insulin in 1922. (International Gairdner Award 1967)Gaspard Monge (1746–1818) – Father of descriptive geometryJohn J. Montgomery (1858-1911) - American physicist and inventor of gliders and aerodynamics.Giovanni Battista Morgagni (1682–1771) – Father of modern anatomical pathologyJohannes Peter Müller (1801–1858) – Founder of modern physiologyJoseph Murray (1919–2012) – Nobel Prize in Medicine laureate.John von Neumann (1903–1957) – Hungarian-born American mathematician and polymath who converted to CatholicismJean-Antoine Nollet (1700–1770) – Discovered the phenomenon of osmosis in natural membranes.William of Ockham (c.1288–c.1348) – Franciscan Friar known for Ockham's RazorNicole Oresme (c.1320–1382) – 14th century bishop who theorized the daily rotation of the earth on its axisBarnaba Oriani (1752–1832) – Known for Oriani's theorem and for his research on UranusAbraham Ortelius (1527–1598) – Created the first modern atlas and theorized on continental driftBlaise Pascal (1623–1662) – French mathematician, physicist, inventor, writer and philosopherLouis Pasteur (1822–1895) – Father of bacteriologyWolfgang Ernst Pauli (1900 – 1958) - Pioneer of quantum physicsMax Perutz (1914–2002) – Austrian-born British molecular biologist, who shared the 1962 Nobel Prize for ChemistryNicolas-Claude Fabri de Peiresc (1580–1637) – Discovered the Orion NebulaGeorg von Peuerbach (1423–1461) – Called the father of mathematical and observational astronomy in the WestGiuseppe Piazzi (1746–1826) – Theatine priest who discovered the asteroid Ceres and did important work cataloguing starsJean Picard (1620–1682) – French priest and father of modern astronomy in FranceVladimir Prelog (1906–1998) – Croatian-Swiss organic chemist, winner of the 1975 Nobel Prize for chemistry.Jules Henri Poincaré (1854–1912) – French mathematician, theoretical physicist, engineer and philosopher of scienceJohn Polanyi (1929– ) – Canadian chemist who won the 1986 Nobel Prize for his research in chemical kinetics.Michael Polanyi (1891–1976) – Hungarian polymath who made contributions to physical chemistry, economics, and philosophy.Santiago Ramón y Cajal (1852–1934) – Awarded the Nobel Prize for his contributions to neuroscienceRené Antoine Ferchault de Réaumur (1683–1757) – Scientific polymath known especially for his study of insectsFrancesco Redi (1626–1697) – His experiments with maggots were a major step in overturning the idea of spontaneous generationHenri Victor Regnault (1810–1878) – Chemist with two laws governing the specific heat of gases named after himGiovanni Battista Riccioli (1598–1671) – Jesuit priest and the first person to measure the acceleration due to gravity of falling bodiesGregorio Ricci-Curbastro (1853-1925) – One of the founders of tensor calculusGilles de Roberval (1602-1675) – Mathematician who studied the geometry of infinitesimals and was one of the founders of kinematic geometryWilhelm Roentgen (1845–1923) – Discovered X-rays.Frederick Rossini (1899–1990) – Priestley Medal and Laetare Medal winning chemist.Theodor Schwann (1810–1882) – Founder of the theory of the cellular structure of animal organismsAngelo Secchi (1818–1878) – Jesuit priest who developed the first system of stellar classificationIgnaz Semmelweis (1818–1865) – Early pioneer of antiseptic procedures and the discoverer of the cause of puerperal feverDomingo de Soto (1494–1560) - Spanish Dominican priest and professor at the University of Salamanca; in his commentaries to Aristotle he proposed that free falling bodies undergo constant accelerationLazzaro Spallanzani (1729–1799) – Priest and biologist who laid the groundwork for Pasteur's discoveriesNicolas Steno (1638–1686) – Bishop, and father of stratigraphyPierre Teilhard de Chardin (1881-1955), Jesuit priest, theologian and renowned paleontologist.Francesco Lana de Terzi (1631–1687) – Jesuit priest who has been called the father of aeronauticsLouis Jacques Thénard (1777–1857) – Discovered hydrogen peroxideTheodoric of Freiberg (c.1250–c.1310) – Gave the first geometrical analysis of the rainbowEvangelista Torricelli (1608–1647) – Inventor of the barometerPaolo dal Pozzo Toscanelli (1397–1482) – Italian mathematician, astronomer and cosmographerRichard Towneley (1629–1707) – Mathematician and astronomer whose work contributed to the formulation of Boyle's LawLouis René Tulasne (1815–1885) – Biologist with several genera and species of fungi named after himLouis Nicolas Vauquelin (1763–1829) – Discovered the chemical element berylliumPierre Vernier (1580–1637) – Mathematician who invented the Vernier scaleUrbain Le Verrier (1811–1877) – Mathematician who predicted the discovery of NeptuneAndreas Vesalius (1514–1564) – Father of modern human anatomyFrançois Viète (1540–1603) – Father of Modern AlgebraLeonardo da Vinci (1452–1519) – Renaissance anatomist, scientist, mathematician, and painterVincenzo Viviani (1622–1703) – Mathematician known for Viviani's theorem, Viviani's curve and his work in determining the speed of soundAlessandro Volta (1745–1827) – Physicist known for the invention of the batteryWilhelm Heinrich Waagen (1841–1900) – Geologist and paleontologistKarl Weierstrass (1815–1897) – Often called the Father of Modern AnalysisE. T. Whittaker (1873–1956) – English mathematician who made contributions to applied mathematics and mathematical physicsEric F. Wieschaus (1947– ) – He was awarded the Nobel Prize in Physiology or MedicineJohann Joachim Winckelmann (1717–1768) – One of the founders of scientific archaeologyBertram Windle (1858-1929) – Anthropologist, physician, and former president of University College CorkAntonino Zichichi (1929– ) – Italian nuclear physicist, former President of the Istituto Nazionale di Fisica NucleareList of Catholic Cleric ScientistsJosé de Acosta (1539–1600) – Jesuit missionary and naturalist who wrote one of the very first detailed and realistic descriptions of the new worldFrançois d'Aguilon (1567–1617) – Belgian Jesuit mathematician, physicist, and architect.Lorenzo Albacete (1941–2014) Priest physicist and theologianAlbert of Saxony (philosopher) (c. 1320–1390) – German bishop known for his contributions to logic and physics; with Buridan he helped develop the theory that was a precursor to the modern theory of inertiaAlbertus Magnus (c. 1206–1280) – Dominican friar and Bishop of Regensberg who has been described as "one of the most famous precursors of modern science in the High Middle Ages." Patron saint of natural sciences; Works in physics, logic, metaphysics, biology, and psychology.Giulio Alenio (1582-1649) - Jesuit theologian, astronomer and mathematician. He was sent to the Far East as a missionary and adopted aChinese name and customs. He wrote 25 books including a cosmography and a Life of Jesus in Chinese.José María Algué (1856–1930) – Priest and meteorologist who invented the barocyclonometerJosé Antonio de Alzate y Ramírez (1737–1799) – Priest, scientist, historian, cartographer, and meteorologist who wrote more than thirty treatises on a variety of scientific subjectsFrancesco Castracane degli Antelminelli (1817–1899) – Priest and botanist who was one of the first to introduce microphotography into the study of biologyGiovanni Antonelli (1818–1872) – Priest and director of the Ximenian Observatory of Florence who also collaborated on the design of a prototype of the internal combustion engineNicolò Arrighetti (1709–1767) – Jesuit who wrote treatises on light, heat, and electricity.Mariano Artigas (1938–2006) – Spanish physicist, philosopher and theologian who received the Templeton Foundation Prize in 1995Giuseppe Asclepi (1706–1776) – Jesuit astronomer and physician who served as director of the Collegio Romano observatory; The lunar crater Asclepi is named after him.Roger Bacon (c. 1214–1294) – Franciscan friar who made significant contributions to mathematics and optics and has been described as a forerunner of modern scientific method.Bernardino Baldi (1533–1617) – Abbot, mathematician, and writerEugenio Barsanti (1821–1864) – Piarist who is the possible inventor of the internal combustion engineBartholomeus Amicus (1562–1649) – Jesuit wrote on philosophy, mathematics, astronomy, and the concept of vacuum and its relationship with God.Daniello Bartoli (1608–1685) – Bartoli and fellow Jesuit astronomer Niccolò Zucchi are credited as probably having been the first to see the equatorial belts on the planet JupiterJoseph Bayma (1816–1892) – Jesuit known for work in stereochemistry and mathematicsGiacopo Belgrado (1704–1789) – Jesuit professor of mathematics and physics and court mathematician who did experimental work in physicsMario Bettinus (1582–1657) – Jesuit philosopher, mathematician and astronomer; lunar crater Bettinus named after himGiuseppe Biancani (1566–1624) – Jesuit astronomer, mathematician, and selenographer, after whom the crater Blancanus on the Moon is namedJacques de Billy (1602–1679) – Jesuit who has produced a number of results in number theory which have been named after him; published several astronomical tables; The crater Billy on the Moon is named after him.Paolo Boccone (1633–1704) – Cistercian botanist who contributed to the fields of medicine and toxicologyBernard Bolzano (1781–1848) – Priest, mathematician, and logician whose other interests included metaphysics, ideas, sensation, and truth.Anselmus de Boodt (1550–1632) – Canon who was one of the founders of mineralogyTheodoric Borgognoni (1205–1298) – Dominican friar, Bishop of Cervia, and medieval Surgeon who made important contributions to antiseptic practice and anaestheticsChristopher Borrus (1583–1632) – Jesuit mathematician and astronomy who made observations on the magnetic variation of the compassRoger Joseph Boscovich (1711–1787) – Jesuit polymath known for his contributions to modern atomic theory and astronomyJoachim Bouvet (1656–1730) – Jesuit sinologist and cartographer who did his work in ChinaMichał Boym (c. 1612–1659) – Jesuit who was one of the first westerners to travel within the Chinese mainland, and the author of numerous works on Asian fauna, flora and geography.Thomas Bradwardine (c. 1290–1349) – Archbishop of Canturbury and mathematician who helped develop the mean speed theorem; one of the Oxford CalculatorsMartin Stanislaus Brennan (1845-1927) - Priest and astronomer who wrote several books about scienceHenri Breuil (1877–1961) – Priest, archaeologist, anthropologist, ethnologist and geologist.Jan Brożek (1585–1652) – Polish canon, polymath, mathematician, astronomer, and physician; the most prominent Polish mathematician of the 17th centuryLouis-Ovide Brunet (1826–1876) – Priest who was one of the founding fathers of Canadian botanyFrancesco Faà di Bruno (c. 1825–1888) – Priest and mathematician beatified by Pope John Paul IIIsmaël Bullialdus (1605–1694) – Priest, astronomer, and member of the Royal Society; the Bullialdus crater is named in his honorJean Buridan (c. 1300 – after 1358) – Priest who formulated early ideas of momentum and inertial motion and sowed the seeds of the Copernican revolution in EuropeRoberto Busa (1913-2011) - Jesuit wrote a lemmatization of the complete works of St. Thomas Aquinas (Index Thomisticus) which was later digitalized by IBM.Niccolò Cabeo (1586–1650) – Jesuit mathematician; the crater Cabeus is named in his honorNicholas Callan (1799–1846) – Priest & Irish scientist best known for his work on the induction coilJohn Cantius (1390-1473)—Priest and Buridanist mathematical physicist who further developed the theory of impetusJean Baptiste Carnoy (1836–1899) – cytologyGiovanni di Casali (died c. 1375) – Franciscan friar who provided a graphical analysis of the motion of accelerated bodiesPaolo Casati (1617–1707) – Jesuit mathematician who wrote on astronomy and vacuums; The crater Casatus on the Moon is named after him.Laurent Cassegrain (1629–1693) – Priest who was the probable namesake of the Cassegrain telescope; The crater Cassegrain on the Moon is named after himBenedetto Castelli (1578–1643) – Benedictine mathematician; long-time friend and supporter of Galileo Galilei, who was his teacher; wrote an important work on fluids in motionBonaventura Cavalieri (1598–1647) – Jesuate known for his work on the problems of optics and motion, work on the precursors of infinitesimal calculus, and the introduction of logarithms to Italy. Cavalieri's principle in geometry partially anticipated integral calculus; the lunar crater Cavalerius is named in his honorAntonio José Cavanilles (1745–1804) – Priest and leading Spanish taxonomic botanist of the 18th centuryFrancesco Cetti (1726–1778) – Jesuit zoologist and mathematicianTommaso Ceva (1648–1737) – Jesuit mathematician and professor who wrote treatises on geometry, gravity, and arithmeticChristopher Clavius (1538–1612) – Respected Jesuit Astronomer and mathematician who headed the commission that yielded the Gregorian calendar; wrote influential astronomical textbook.Guy Consolmagno (1952– ) – Jesuit astronomer and planetary scientistNicolaus Copernicus (1473–1543) –Renaissance astronomer and canon famous for his heliocentric cosmology that set in motion the Copernican RevolutionVincenzo Coronelli (1650–1718) – Franciscan cosmographer, cartographer, encyclopedist, and globe-makerGeorge Coyne (1933– ) – Jesuit astronomer and former director of the Vatican ObservatoryJames Cullen (mathematician) (1867–1933) – Jesuit mathematician who published what is now known as Cullen numbers in number theoryJames Curley (astronomer) (1796–1889) – Jesuit who was the first director of Georgetown Observatory and determined the latitude and longitude of Washington D.C.Albert Curtz (1600–1671) – Jesuit astronomer who expanded on the works of Tycho Brahe and contributed to early understanding of the moon; The crater Curtius on the Moon is named after him.Johann Baptist Cysat (1587–1657) – Jesuit mathematician and astronomer, after whom the lunar crater Cysatus is named; published the first printed European book concerning Japan; one of the first to make use of the newly developed telescope; most important work was on cometsJean-Baptiste Chappe d'Auteroche (1722–1769) – Priest and astronomer best known for his observations of the transits of VenusIgnazio Danti (1536–1586) – Dominican mathematician, astronomer, cosmographer, and cartographerArmand David (1826–1900) – Lazarist priest, zoologist, and botanist who did important work in these fields in ChinaFrancesco Denza (1834–1894) – Barnabite meteorologist, astronomer, and director of Vatican ObservatoryVáclav Prokop Diviš (1698–1765) – Czech priest who studied electrical phenomenons and constructed, among other inventions, the first electrified musical instrument in historyAlberto Dou (1915-2009), Spanish Jesuit priest who was president of the Royal Society of Mathematics, member of the Royal Academy of Natural, Physical, and Exact Sciences, and one of the foremost mathematicians of his country.Johann Dzierzon (1811–1906) – Priest and pioneering apiarist who discovered the phenomenon of parthenogenesis among bees, and designed the first successful movable-frame beehive; has been described as the "father of modern apiculture"Francesco Faà di Bruno (c. 1825–1888) – Priest and mathematician beatified by Pope John Paul IIHonoré Fabri (1607–1688) – Jesuit mathematician and physicistJean-Charles de la Faille (1597–1652) – Jesuit mathematician who determined the center of gravity of the sector of a circle for the first timeGabriele Falloppio (1523–1562) – Canon and one of the most important anatomists and physicians of the sixteenth century. The Fallopian tubes, which extend from the uterus to the ovaries, are named for him.Gyula Fényi (1845–1927) – Jesuit astronomer and director of the Haynald Observatory; noted for his observations of the sun; The crater Fényi on the Moon is named after himLouis Feuillée (1660–1732) – Minim explorer, astronomer, geographer, and botanistPlacidus Fixlmillner (1721–1791) – Benedictine priest and one of the first astronomers to compute the orbit of UranusPaolo Frisi (1728–1784) – Priest, mathematician, and astronomer who did significant work in hydraulicsJosé Gabriel Funes (1963– ) – Jesuit astronomer and current director of the Vatican ObservatoryLorenzo Fazzini (1787-1837) - Priest and physicst born in Vieste and working in NeaplesJoseph Galien (1699 – c. 1762) – Dominican professor who wrote on aeronautics, hailstorms, and airshipsJean Gallois (1632–1707) – French scholar, abbot, and member of Academie des sciencesPierre Gassendi (1592–1655) – French priest, astronomer, and mathematician who published the first data on the transit of Mercury; best known intellectual project attempted to reconcile Epicurean atomism with ChristianityAgostino Gemelli (1878–1959) – Franciscan physician and psychologist; founded Catholic University of the Sacred Heart in MilanJohannes von Gmunden (c. 1380–1442) – Canon, mathematician, and astronomer who compiled astronomical tables; Asteroid 15955 Johannesgmunden named in his honorCarlos de Sigüenza y Góngora (1645–1700) – Priest, polymath, mathematician, astronomer, and cartographer; drew the first map of all of New SpainAndrew Gordon (Benedictine) (1712–1751) – Benedictine monk, physicist, and inventor who made the first electric motorChristoph Grienberger (1561–1636) – Jesuit astronomer after whom the crater Gruemberger on the Moon is named; verified Galileo's discovery of Jupiter's moons.Francesco Maria Grimaldi (1618–1663) – Jesuit who discovered the diffraction of light (indeed coined the term "diffraction"), investigated the free fall of objects, and built and used instruments to measure geological features on the moonRobert Grosseteste (c. 1175 – 1253) – Bishop who was one of the most knowledgeable men of the Middle Ages; has been called "the first man ever to write down a complete set of steps for performing a scientific experiment."Paul Guldin (1577–1643) – Jesuit mathematician and astronomer who discovered the Guldinus theorem to determine the surface and the volume of a solid of revolutionBartolomeu de Gusmão (1685–1724) – Jesuit known for his early work on lighter-than-air airship designJohann Georg Hagen (1847–1930) – Jesuit director of the Georgetown and Vatican Observatories; The crater Hagen on the Moon is named after himNicholas Halma (1755–1828) – French abbot, mathematician, and translatorJean-Baptiste du Hamel (1624–1706) – French priest, natural philosopher, and secretary of the Academie Royale des SciencesRené Just Haüy (1743–1822) – Priest known as the father of crystallographyMaximilian Hell (1720–1792) – Jesuit astronomer and director of the Vienna Observatory; the crater Hell on the Moon is named after him.Michał Heller (1936– ) – Polish priest, Templeton Prize winner, and prolific writer on numerous scientific topicsLorenz Hengler (1806–1858) – Priest often credited as the inventor of the horizontal pendulumHermann of Reichenau (1013–1054) – Benedictine historian, music theorist, astronomer, and mathematicianPierre Marie Heude (1836–1902) – Jesuit missionary and zoologist who studied the natural history of Eastern AsiaFranz von Paula Hladnik (1773–1844) – Priest and botanist who discovered several new kinds of plants, and certain genera have been named after himGiovanni Battista Hodierna (1597–1660) – Priest and astronomer who catalogued nebulous objects and developed an early microscopeVictor-Alphonse Huard (1853–1929) – Priest, naturalist, educator, writer, and promoter of the natural sciencesMaximus von Imhof (1758–1817) – German Augustinian physicist and director of the Munich Academy of SciencesGiovanni Inghirami (1779–1851) – Italian Piarist astronomer who has a valley on the moon named after him as well as a craterFrançois Jacquier (1711–1788) – Franciscan mathematician and physicist; at his death he was connected with nearly all the great scientific and literary societies of EuropeStanley Jaki (1924–2009) – Benedictine priest and prolific writer who wrote on the relationship between science and theologyÁnyos Jedlik (1800–1895) – Benedictine engineer, physicist, and inventor; considered by Hungarians and Slovaks to be the unsung father of the dynamo and electric motorGeorg Joseph Kamel (1661–1706) – Jesuit missionary and botanist who established the first pharmacy in the PhilippinesKarl Kehrle (1898-1996) - Benedictine Monk of Buckfast Abbey, England. Beekeeper. World authority on bee breeding, developer of the Buckfast bee.Eusebio Kino (1645-1711) - Jesuit missionary, mathematician, astronomer and cartographer who drew maps based on his explorations first showing that California was not an island as then believed and who published an astronomical treatise in Mexico City of his observations of the Kirsch comet.Otto Kippes (1905–1994) – Priest acknowledged for his work in asteroid orbit calculations; the main belt asteroid 1780 Kippes was named in his honourAthanasius Kircher (1602–1680) – Jesuit who has been called the father of Egyptology and "Master of a hundred arts"; wrote an encyclopedia of China; one of the first people to observe microbes through a microscopeWenceslas Pantaleon Kirwitzer (1588–1626) – Jesuit astronomer and missionary who published observations of cometsJan Krzysztof Kluk (1739–1796) – Priest, naturalist agronomist, and entomologist who wrote a multi-volume work on Polish animal lifeMarian Wolfgang Koller (1792–1866) – Benedictine professor who wrote on astronomy, physics, and meteorologyFranz Xaver Kugler (1862–1929) – Jesuit chemist, mathematician, and Assyriologist who is most noted for his studies of cuneiform tablets and Babylonian astronomyRamon Llull (ca. 1232 – ca. 1315) Majorcan writer and philosopher, logician and a Franciscan tertiary considered a pioneer of computation theoryNicolas Louis de Lacaille (1713-1762) - French deacon and astronomer noted for cataloguing stars, nebulous objects, and constellationsEugene Lafont (1837–1908) – Jesuit physicist, astronomer, and founder of the first Scientific Society in IndiaAntoine de Laloubère (1600–1664) – Jesuit and first mathematician to study the properties of the helixBernard Lamy (1640–1715) – Oratorian philosopher and mathematician who wrote on the parallelogram of forcesPierre André Latreille (1762–1833) – Priest and entomologist whose works describing insects assigned many of the insect taxa still in use todayGeorges Lemaître (1894–1966) – Belgian priest and father of the Big Bang TheoryThomas Linacre (c. 1460–1524) – English priest, humanist, translator, and physicianFrancis Line (1595–1675) – Jesuit magnetic clock and sundial maker who disagreed with some of the findings of Newton and BoyleJuan Caramuel y Lobkowitz (1606–1682) – Cistercian who wrote on a variety of scientific subjects, including probability theoryJean Mabillon (1632–1707) – Benedictine monk and scholar, considered the founder of palaeography and diplomaticsJames B. Macelwane (1883–1956) – "The best-known Jesuit seismologist" and "one of the most honored practitioners of the science of all time"; wrote the first textbook on seismology in America.John MacEnery (1797-1841) - Archaeologist who investigated the Palaeolithic remains at Kents CavernPaul McNally (1890–1955) – Jesuit astronomer and director of Georgetown Observatory; the crater McNally on the Moon is named after him.Manuel Magri (1851–1907) – Jesuit ethnographer, archaeologist and writer; one of Malta's pioneers in archaeologyEmmanuel Maignan (1601–1676) – Minim physicist and professor of medicine who published works on gnomonics and perspectiveCharles Malapert (1581–1630) – Jesuit writer, astronomer, and proponent of Aristotelian cosmology; also known for observations of sunpots and of the lunar surface, and the crater Malapert on the Moon is named after himNicolas Malebranche (1638–1715) – Oratorian philosopher who studied physics, optics, and the laws of motion and disseminated the ideas of Descartes and LeibnizMarcin of Urzędów (c. 1500–1573) – Priest, physician, pharmacist, and botanistJoseph Maréchal (1878–1944) – Jesuit philosopher and psychologistMarie-Victorin (1885–1944) – Christian Brother and botanist best known as the father of the Jardin botanique de MontréalEdme Mariotte (c. 1620–1684) – Priest and physicist who recognized Boyle's Law and wrote about the nature of colorFrancesco Maurolico (1494–1575) – Benedictine who made contributions to the fields of geometry, optics, conics, mechanics, music, and astronomy, and gave the first known proof by mathematical inductionChristian Mayer (astronomer) (1719–1783) – Jesuit astronomer most noted for pioneering the study of binary starsJames Robert McConnell (1915-1999) - Irish Theoretical Physicist, Pontifical Academician, MonsignorGregor Mendel (1822–1884) – Augustinian monk and father of geneticsPietro Mengoli (1626–1686) – Priest and mathematician who first posed the famous Basel ProblemGiuseppe Mercalli (1850–1914) – Priest, volcanologist, and director of the Vesuvius Observatory who is best remembered today for his Mercalli scale for measuring earthquakes which is still in useMarin Mersenne (1588–1648) – Minim philosopher, mathematician, and music theorist who is often referred to as the "father of acoustics"Paul of Middelburg (1446–1534) – Bishop of Fossombrone who wrote important works on the reform of the calendarMaciej Miechowita (1457–1523) – Canon who wrote the first accurate geographical and ethnographical description of Eastern Europe, as well as two medical treatisesFrançois-Napoléon-Marie Moigno (1804–1884) – Jesuit physicist and mathematician; was an expositor of science and translator rather than an original investigatorJuan Ignacio Molina (1740–1829) – Jesuit naturalist, historian, botanist, ornithologist and geographerLouis Moréri (1643–1680) – 17th century priest and encyclopaedistThéodore Moret (1602–1667) – Jesuit mathematician and author of the first mathematical dissertations ever defended in Prague; the lunar crater Moretus is named after him.Landell de Moura (1861–1928) – Priest and inventor who was the first to accomplish the transmission of the human voice by a wireless machineGabriel Mouton (1618–1694) – Abbot, mathematician, astronomer, and early proponent of the metric systemJozef Murgaš (1864–1929) – Priest who contributed to wireless telegraphy and help develop mobile communications and wireless transmission of information and human voiceJosé Celestino Mutis (1732–1808) – Canon, botanist, and mathematician who led the Royal Botanical Expedition of the New WorldJean François Niceron (1613–1646) – Minim mathematician who studied geometrical opticsNicholas of Cusa (1401–1464) – Cardinal, philosopher, jurist, mathematician, astronomer, and one of the great geniuses and polymaths of the 15th centuryJulius Nieuwland (1878–1936) – Holy Cross priest, known for his contributions to acetylene research and its use as the basis for one type of synthetic rubber, which eventually led to the invention of neoprene by DuPontJean-Antoine Nollet (1700–1770) – Abbot and physicist who discovered the phenomenon of osmosis in natural membranes.Hugo Obermaier (1877–1946) – Priest, prehistorian, and anthropologist who is known for his work on the diffusion of mankind in Europe during the Ice Age, as well as his work with north Spanish cave artWilliam of Ockham (c. 1288 – c. 1348) – Franciscan Scholastic who wrote significant works on logic, physics, and theology; known for Ockham's RazorNicole Oresme (c. 1323–1382) – One of the most famous and influential philosophers of the later Middle Ages; economist, mathematician, physicist, astronomer, philosopher, theologian and Bishop of Lisieux, and competent translator; one of the most original thinkers of the 14th centuryBarnaba Oriani (1752–1832) – Barnabite geodesist, astronomer and scientist whose greatest achievement was his detailed research of the planet Uranus, and is also known for Oriani's theoremTadeusz Pacholczyk (1965- ) – Priest, neuroscientist and writerLuca Pacioli (c. 1446–1517) – Franciscan friar who published several works on mathematics and is often regarded as the Father of AccountingIgnace-Gaston Pardies (1636–1673) – Jesuit physicist known for his correspondence with Newton and DescartesFranciscus Patricius (1529–1597) – Priest, cosmic theorist, philosopher, and Renaissance scholarJohn Peckham (1230–1292) – Archbishop of Canterbury and early practitioner of experimental scienceNicolas Claude Fabri de Peiresc (1580–1637) – Abbot and astromer who discovered the Orion Nebula; lunar crater Peirescius named in his honorStephen Joseph Perry (1833–1889) – Jesuit astronomer and Fellow of the Royal Society; made frequent observations of Jupiter's satellites, of stellar occultations, of comets, of meteorites, of sun spots, and faculaeGiambattista Pianciani (1784–1862) – Jesuit mathematician and physicistGiuseppe Piazzi (1746–1826) – Theatine mathematician and astronomer who discovered Ceres, today known as the largest member of the asteroid belt; also did important work cataloguing starsJean Picard (1620–1682) – Priest and first person to measure the size of the Earth to a reasonable degree of accuracy; also developed what became the standard method for measuring the right ascension of a celestial object; The PICARD mission, an orbiting solar observatory, is named in his honorEdward Pigot (1858–1929) – Jesuit seismologist and astronomerAlexandre Guy Pingré (1711–1796) – French priest astronomer and naval geographer; the crater Pingré on the Moon is named after him, as is the asteroid 12719 PingréAndrew Pinsent (1966- ) – Priest whose current research includes the application of insights from autism and social cognition to 'second-person' accounts of moral perception and character formation. His previous scientific research contributed to the DELPHI experiment at CERNJean Baptiste François Pitra (1812–1889) – Bendedictine cardinal, archaeologist and theologian who noteworthy for his great archaeological discoveriesCharles Plumier (1646–1704) – Minim friar who is considered one of the most important botanical explorers of his timeMarcin Odlanicki Poczobutt (1728–1810) – Jesuit astronomer and mathematician; granted the title of the King's Astronomer; the crater Poczobutt on the Moon is named after him.Léon Abel Provancher (1820–1892) – Priest and naturalist devoted to the study and description of the fauna and flora of Canada; his pioneer work won for him the appellation of the "Father of Natural History in Canada"Louis Receveur (1757–1788) – Franciscan naturalist and astronomer; described as being as close as one could get to being an ecologist in the 18th centuryFranz Reinzer (1661–1708) – Jesuit who wrote an in-depth meteorological, astrological, and political compendium covering topics such as comets, meteors, lightning, winds, fossils, metals, bodies of water, and subterranean treasures and secrets of the earthLouis Rendu (1789–1859) – Bishop who wrote an important book on the mechanisms of glacial motion; the Rendu Glacier, Alaska, U.S. and Mount Rendu, Antarctica are named for himVincenzo Riccati (1707–1775) – Italian Jesuit mathematician and physicistMatteo Ricci (1552–1610) – One of the founding fathers of the Jesuit China Mission and co-author of the first European-Chinese dictionaryGiovanni Battista Riccioli (1598–1671) – Jesuit astronomer who authored Almagestum novum, an influential encyclopedia of astronomy; The first person to measure the rate of acceleration of a freely falling body; created a selenograph with Father Grimaldi that now adorns the entrance at the National Air and Space Museum in Washington D.C.Richard of Wallingford (1292-1336) - Abbot, renowned clockmaker, and one of the initiators of western trigonometryJohannes Ruysch (c. 1460–1533) – Priest, explorer, cartographer, and astronomer who created the second oldest known printed representation of the New WorldGiovanni Girolamo Saccheri (1667–1733) – Jesuit mathematician and geometerJohannes de Sacrobosco (c. 1195 – c. 1256) – Irish monk and astronomer who wrote the authoritative medieval astronomy text Tractatus de Sphaera; his Algorismus was the first text to introduce Hindu-Arabic numerals and procedures into the European university curriculum; the lunar crater Sacrobosco is named after himGregoire de Saint-Vincent (1584–1667) – Jesuit mathematician who made important contributions to the study of the hyperbolaAlphonse Antonio de Sarasa (1618–1667) – Jesuit mathematician who contributed to the understanding of logarithmsChristoph Scheiner (c. 1573–1650) – Jesuit physicist, astronomer, and inventor of the pantograph; wrote on a wide range of scientific subjectsWilhelm Schmidt (linguist) (1868–1954) – Austrian priest, linguist, anthropologist, and ethnologist.George Schoener (1864–1941) – Priest who became known in the United States as the "Padre of the Roses" for his experiments in rose breedingGaspar Schott (1608–1666) – Jesuit physicist, astronomer, and natural philosopher who is most widely known for his works on hydraulic and mechanical instrumentsFranz Paula von Schrank (1747–1835) – Priest, botanist, entomologist, and prolific writerBerthold Schwarz (c. 14th century) – Franciscan friar and reputed inventor of gunpowder and firearmsAnton Maria Schyrleus of Rheita (1604–1660) – Capuchin astronomer and optrician who built Kepler's telescopeGeorge Mary Searle (1839–1918) – Paulist astronomer and professor who discovered six galaxiesAngelo Secchi (1818–1878) – Jesuit pioneer in astronomical spectroscopy, and one of the first scientists to state authoritatively that the sun is a starAlessandro Serpieri (1823–1885) – Priest, astronomer, and seismologist who studied shooting stars, and was the first to introduce the concept of the seismic radiantGerolamo Sersale (1584–1654) – Jesuit astronomer and selenographer; his map of the moon can be seen in the Naval Observatory of San Fernando; the lunar crater Sirsalis is named after himBenedict Sestini (1816–1890) – Jesuit astronomer, mathematician and architect; studied sunspots and eclipses; wrote textbooks on a variety of mathematical subjectsRené François Walter de Sluse (1622–1685) – Canon and mathematician with a family of curves named after himDomingo de Soto (1494–1560) - Spanish Dominican priest and professor at the University of Salamanca; in his commentaries to Aristotle he proposed that free falling bodies undergo constant accelerationLazzaro Spallanzani (1729–1799) – Priest, biologist, and physiologist who made important contributions to the experimental study of bodily functions, animal reproduction, and essentially discovered echolocation; his research of biogenesis paved the way for the investigations of Louis PasteurValentin Stansel (1621–1705) – Jesuit astronomer who made important observations of cometsJohan Stein (1871–1951) – Jesuit astronomer and director of the Vatican Observatory, which he modernized and relocated to Castel Gandolfo; the crater Stein on the far side of the Moon is named after himNicolas Steno (1638–1686) – Bishop beatified by Pope John Paul II who is often called the father of geology and stratigraphy, and is known for Steno's principlesPope Sylvester II (c. 946–1003) – Prolific scholar who endorsed and promoted Arabic knowledge of arithmetic, mathematics, and astronomy in Europe, reintroducing the abacus and armillary sphere which had been lost to Europe since the end of the Greco-Roman eraAlexius Sylvius Polonus (1593 – c. 1653) – Jesuit astronomer who studied sunspots and published a work on calendariographyIgnacije Szentmartony (1718–1793) – Jesuit cartographer, mathematician, and astronomer who became a member of the expedition that worked on the rearrangement of the frontiers among colonies in South AmericaAndré Tacquet (1612–1660) – Jesuit mathematician whose work laid the groundwork for the eventual discovery of calculusPierre Teilhard de Chardin (1881–1955) – Jesuit paleontologist and geologist who took part in the discovery of Peking ManFrancesco Lana de Terzi (c. 1631–1687) – Jesuit referred to as the Father of Aviation for his pioneering efforts; he also developed a blind writing alphabet prior to Braille.Theodoric of Freiberg (c. 1250 – c. 1310) – Dominican theologian and physicist who gave the first correct geometrical analysis of the rainbowJoseph Tiefenthaler (1710–1785) – Jesuit who was one of the earliest European geographers to write about IndiaGiuseppe Toaldo (1719–1797) – Priest and physicist who studied atmospheric electricity and did important work with lightning rods; the asteroid 23685 Toaldo is named for him.José Torrubia (c. 1700–1768) – Franciscan linguist, scientist, collector of fossils and books, and writer on historical, political and religious subjectsFranz de Paula Triesnecker (1745–1817) – Jesuit astronomer and director of the Vienna Observatory; published a number of treatises on astronomy and geography; the crater Triesnecker on the Moon is named after him.Luca Valerio (1552–1618) – Jesuit mathematician who developed ways to find volumes and centers of gravity of solid bodiesPierre Varignon (1654–1722) – Priest and mathematician whose principle contributions were to statics and mechanics; created a mechanical explanation of gravitationJacques de Vaucanson (1709–1782) – French Minim friar inventor and artist who was responsible for the creation of impressive and innovative automata and machines such as the first completely automated loom.Giovanni Battista Venturi (1746–1822) – Priest who discovered the Venturi effectFausto Veranzio (c. 1551–1617) – Bishop, polymath, inventor, and lexicographerFerdinand Verbiest (1623–1688) – Jesuit astronomer and mathematician; designed what some claim to be the first ever self-propelled vehicle – many claim this as the world's first automobileFrancesco de Vico (1805–1848) – Jesuit astronomer who discovered or co-discovered a number of comets; also made observations of Saturn and the gaps in its rings; the lunar crater De Vico and the asteroid 20103 de Vico are named after himVincent of Beauvais (c.1190–c.1264) – Dominican who wrote the most influential encyclopedia of the Middle AgesBenito Viñes (1837–1893) – Jesuit meteorologist who made the first weather model to predict the trajectory of a hurricane.János Vitéz (archbishop) (c.1405–1472) – Archbishop, astronomer, and mathematicianMartin Waldseemüller (c. 1470–1520) – German priest and cartographer who, along with Matthias Ringmann, is credited with the first recorded usage of the word AmericaGodefroy Wendelin (1580–1667) – Priest and astronomer who recognized that Kepler's third law applied to the satellites of Jupiter; the lunar crate Vendelinus is named in his honorJohannes Werner (1468–1522) – Priest, mathematician, astronomer, and geographerWitelo (c. 1230 – after 1280, before 1314) – Friar, physicist, natural philosopher, and mathematician; lunar crater Vitello named in his honor; his Perspectiva powerfully influenced later scientists, in particular Johannes KeplerJulian Tenison Woods (1832–1889) – Passionist geologist and mineralogistTheodor Wulf (1868–1946) – Jesuit physicist who was one of the first experimenters to detect excess atmospheric radiationFranz Xaver von Wulfen (1728-1805) - Jesuit botanist, mineralogist, and alpinistJohn Zahm (1851–1921) – Holy Cross priest and South American explorerGiuseppe Zamboni (1776–1846) – Priest and physicist who invented the Zamboni pile, an early electric battery similar to the Voltaic pileFrancesco Zantedeschi (1797–1873) – Priest who was among the first to recognize the marked absorption by the atmosphere of red, yellow, and green light; published papers on the production of electric currents in closed circuits by the approach and withdrawal of a magnet, thereby anticipating Michael Faraday's classical experiments of 1831Niccolò Zucchi (1586–1670) – claimed to have tried to build a reflecting telescope in 1616 but abandoned the idea (maybe due to the poor quality of the mirror). May have been the first to see the belts on the planet Jupiter (1630).Giovanni Battista Zupi (c. 1590–1650) – Jesuit astronomer, mathematician, and first person to discover that the planet Mercury had orbital phases; the crater Zupus on the Moon is named after him.And if you examine you will also find a big number of the scientists of the world are also products of Catholic educational institutions.List of Catholic scientistsList of Roman Catholic cleric-scientists