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Greek mathematician, geographer, poet, astronomer, and music theorist who became a chief librarian at the Library of Alexandria. He made the first accurate calculation of the circumference of the Earth.
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Astronomer and mathematician who created the geocentric theory.
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Astronomer and mathematician who formulated the heliocentric theory.
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Astronomer, physicist, and engineer who discovered four massive moons of Jupiter and found evidence which supported the heliocentric theory.
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Danish nobleman, astronomer, astrologer, alchemist, and writer known for his precise astronomical observations.
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English philosopher credited with developing the scientific method and called the father of empiricism.
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German astronomer, mathematician, and astrologer who was a key figure in the scientific revolution. He is best known for his three laws of planetary motion.
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French philosopher, mathematician, and scientist. He is called the first modern philosopher. He connected geometry and algebra. He said, "I think, therefore I am."
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English philosopher and physician, regarded as one of the most influential Enlightenment thinkers.He believed that everyone is born with certain "inalienable" rights.
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Mathematician, astronomer, physicist, and theologian who developed calculus, the laws of motion, and universal gravitation.
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Organized the periodic table of elements, progressing the field of chemistry.
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Physicist and chemist who won two Nobel prizes, most notable for her studies in radioactivity. Curie discovered elements polonium and radium.
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Astronomer who discovered how to find the distances of stars based on light.
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German polar researcher, geophysicist, and meteorologist who first proposed the idea of continental drift. His theory was unsubstantiated by real evidence, however.
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Astronomer who discovered the existence of galaxies other than the Milky Way and that the universe is expanding.
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Geologist and United States Navy Officer. He is considered one of the founding fathers of the plate tectonics theory. He made observations of the deep ocean seafloor and the magma which rose from mid-ocean ridges.
