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1473
Nicolaus Copernicus
Nicolaus Copernicus was an astronomer who proposed a heliocentric system, that the planets orbit around the Sun -
1546
Tyco Brahe
Brahe showed irregularities in the Moon's orbit and discovered a new star in the Cassiopeia formation. -
1571
Johannes Kepler
Johannes Kepler discovered the Keplerian Telescope -
Isaac Newton
Isaac Newton changed the way we understand the Universe. Revered in his own lifetime, he discovered the laws of gravity and motion and invented calculus -
William Herschel
William Herschel discovered the planet Uranus and many others stars and planets. -
Pierre-Simon Laplace
Laplace announced the invariability of planetary mean motions (average angular velocity) -
Percival Lowell
Founded the Lowell Observatory that discovered the planet Pluto -
Georges Lemaitre
Appealing to the new quantum theory of matter, Lemaître argued that the physical universe was initially a single particle. -
Henrietta Leavitt
She found that a certain type of star, the Cepheid variable, pulses at a rate that's related to its brightness. -
Willem de Sitter
The development of general relativity and its application to cosmology by German-born physicist Albert Einstein. -
Albert Einstein
Albert Einstein is justly famous for devising his theory of relativity, which revolutionized our understanding of space, time, gravity, and the universe. -
Harlow Shapley
deduced that the Sun lies near the central plane of the Milky Way Galaxy and was not at the centre but some 30,000 light-years away. -
Edwin Hubble
His discovery in the 1920s that countless galaxies exist beyond our own Milky Way galaxy revolutionized our understanding of the universe and our place within it. -
Fred Hoyle
Sir Fred Hoyle was an English astronomer and cosmologist, primarily remembered today for his contribution to the theory of stellar nucleosynthesis, and his often controversial stance on other cosmological and scientific matters -
Arno Penzias & Robert Wilson
studied cosmic radiation in 1964, they discovered that microwaves with a wavelength of about 7 centimeters were stronger than expected.