Top: Kids and Teens: People and Society: Biography: Astronomers (15)
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• Kids and Teens: School Time: Science: Astronomy and Space

Ptolemy - An astronomer, mathematician and geographer who lived in Alexandria, Egypt. We know very little more of his life. He classified the Greek geocentric view of the universe, and calculated the apparent motions of the planets.

Kepler, Johannes - The son of a mercenary soldier and an innkeeper's daughter who later became a brilliant and prolific mathematician and astronomer, and creator of the Three Laws of Planetary Motion.

Brahe, Tycho - Discover more about this Danish father of modern Astronomy who made precise, comprehensive astronomical measurements. His data was superior to all other measurements made until the invention of the telescope.

Kepler, Johannes - German astronomer Johannes Kepler was a supporter of the Copernican model of the universe. Find out more about his life and work.

Halley, Edmond - Sir Edmond Halley did more than calculate the return of the comet named after him. Learn more about his work with the motion of stars, and his study of Mercury and Venus.

Galilei, Galileo - A multimedia biography of the famous astronomer Galileo. Learn more about his many contributions to science.

Herschel, Caroline - A short biography of the first woman to discover a comet.

Hubble, Edwin - A biography of a man who expanded our view of the universe.

Adams, John Couch - The first to mathematically predict an unknown planet, his calculations were ignored and someone else discovered Neptune.

Bell Burnel, Jocelyn - The radio astronomer who discovered what turned out to be neutron stars, also called pulsars.

Brahe, Tycho - Danish astronomer who did the most accurate measurements of the sky ever made without a telescope.

Chandrasekhar, Subrahmanyan - The man whose name means "shining" in Sanskrit figured out exactly what makes stars shine.

Le Verrier, Urbain - The French astronomer whose mathematical predictions led to the discovery of Neptune.

Tombaugh, Clyde - The discoverer of Pluto started out as an amateur who built his own telescopes.