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470 BCE- 385 BCE. He consider that all matter is composed of limiting and unlimited things, and that the universe is specific by numbers. He is credited with having originated the hypothesis that the Earth was not the center of the Universe.
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BCE 370 – BCE 415.
Hipatia was the first mathematical woman. She wrote several books on mathematics and astronomy. -
1473 - 1543.
He formulated the heliocentric theory of the solar system via De revolutionibus orbium coelestium -
1546 – 1601.
He is considered the largest observer of the sky in the period prior to the invention of the telescope. He measured the positions of the stars and planets and plotted the motion of the comet of 1577. -
1564 - 1642.
He supported the heliocentric theory of Nicolaus Copernicus, and he improve the telescope. Galileo was the pioneer of the experimental scientific method -
1571 - 1630.
He was known primarily for his laws on the movement of planets in their orbit around the Sun that provided the explanation of optical image formation through small apertures. -
1625 - 1712.
The most important achievement was to establish the first calculation adjusted to today's data on the distance between the Earth and the Sun and investigated atmospheric refraction. -
1656 - 1742.
Halley proposed two types of diving bells that would allow people to explore the deep sea.
Using Newton’ gravitational law predicted the comet of 1682 would return in 76 years. -
1738 - 1822.
He is especially known for discovering the planet Uranus, in 1781. He has discovered about 2,500 new nebulae and star clusters. -
1749 - 1827.
Pierre raised the nebular theory about the formation of the solar system. -
1758 - 1840.
He discovered a method for determining the orbits of comets which is still used today. He discovered three asteroids Ceres, Palas and Vesta. -
1824 - 1910.
He revolutionized observational astronomy by applying spectroscopic methods to the determination of the chemical constituents of stars and other celestial objects. -
1868 - 1938.
He already invented the first spectroheliograph model. He obtained interesting monochromatic photographs of the Sun with calcium and hydrogen light. -
1889 - 1953.
Hubble discovered that many objects previously thought to be clouds of dust and gas and classified as "nebulae" were actually galaxies beyond the Milky Way. -
1893 - 1960.
Walter Baade define the concept of a stellar population, discovered 10 asteroids, and the existence of two types of cepheids.He made important discoveries in the field of stellar evolution and intergalactic distances.
Baade also determined the distance of the Andromeda Galaxy -
1942 - 2018.
Hawkings showed that Einstein's general theory of relativity implies that space and time must have a beginning in the big bang and an end inside the black holes.
