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Feb 19, 1473
Nicolaus Copernicus
He formulateds a helipcentric model of the universe. -
Dec 14, 1546
Tycho Brahe
accurate and comprehensive astronomical and planetary observations -
Feb 15, 1564
galileo galilie
he improved the telescope and consequent astromicalobservations and support for copernicianism -
Dec 27, 1571
Johannes Kepler
known for his laws of planetary motion -
Giovanni Cassini
Cassini most notably discovered four satellites of the planet Saturn and noted the division of the rings of Saturn. -
sir isaac newton
his principia formuated the laws of motion and universal gravitation. -
Edmond Halley
he is best known for computing the orbit of the eponymous Halley's comet. -
Charles Messier
Charles Messier published an astronomical catalouge consisting of nebulae and star clusters that are known as the 110 "Messier Objects." -
William Hershel
He became famous for his discovery of the planet Uranus, along with two of its major moons, Titania and Oberon, and also discovered two moons of Saturn. -
Anne Jump Cannon
Cannon's work was important in development of contemporary stellar classification. -
Albert Einstein
He developed the general theory of relativity, one of the two pillars of modern physics. -
Edwin Hubble
Hubble played a crucial role in establishing the field of extragalactoc astronomy and is generally regarded as one of the most important astronomers. -
Carl Sagan
he is best known for his contributions to the scientific research of extraterrestrial life, including experimental demonstration of the production of amino acids from basic chemicals by radiation. -
Stephen Hawking
He contributed to the discovery of general relativity, and the theoretical prediction that black holes emit radiation, often called Hawking radiation. Hawking was the first to set forth a cosmology explained by a union of the general theory of relativity and quantum mechanics. -
Frank Drake
He is most notable as one of the pioneers in the search for extraterrestrial intelligence, including the founding of SETI.
