Early Thinkers Time Toast

Nicholas Copernicus

Feb 19, 1475

Copernicus developed that the planets and Earth rotate around the Sun. This was also known as the Heliocentric model of the universe.

Tycho Brahe

Dec 14, 1546

Discovered the variation of the Moon's longitude.

Galileo Galilei

Feb 15, 1564

Discovered dark patchs on the Sun which are now called sunspots.

Johannes Kepler

Dec 27, 1571

Discovered the law of planetary motion.

Giovanni Cassini

Jun 8, 1625

Discovered the Cassini Division in Saturns ring, Cassini's Law and the Cassini Oval.

Sir Isaac Newton

Jan 4, 1643

Discovered gravity and what gravity is.

Edmond Halley

Nov 8, 1658

Discovered Halleys comet.

Charles Messier

Jun 26, 1730

Developed the Messier catalog which is a set of astronomical objects.

William Herschel

Nov 15, 1738

Discovered Uranus as well as serveral moons around the gas giants planets. He also discovered infrered radiation.

Anne Jump Cannon

Dec 11, 1863

Delevoped the contemporary stellar classification.

Albert Einstein

Mar 14, 1879

Developed the General Relativity theory which is known today as astrophysics. It helps scientist understand black holes.

Edwin Hubble

Nov 20, 1889

American astronomer who showed with recessional velocity the universe is expanding. This theory is also known as Hubble's Law.

Frank Drake

May 28, 1930

Astronomer most known for his search in extraterrestial intelligence (SETI).

Carl Sagan

Nov 9, 1934

Known for his scientific reasearch of extraterrestrial life and the production of amino acids from the chemicals in radiation

Stephen Hawking

Jan 8, 1942

He helpped discovered hawking radiation which is released by black holes. Explained cosmos through the general theory of relativity and quantum mechanics.