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384 BCE
Aristotle
He was a Greek philosopher. Proved that the earth was spaerical and that everything does not revive around them thought and that the earth was the center of the universe. -
220 BCE
Mariner's Astrolabe: What is it and how it is used
also called sea astrolabe is used to deter man
the latitude of a ship at sea . -
190 BCE
Hipparchus
He is considered the founder of trigonometry but is most famous for his incidental discovery of precession of the equinoxes. -
100
ptolemy
His thory was that the earth was the center of the universe. -
Feb 14, 1473
capernicus
who formulated a model of the universe that placed the Sun rather than the Earth at the center of the universe.HE did this to prove that the sun was the center of the universe. invernter of the scintic method. -
1546
Tycho Brahe
writer known for his accurate and comprehensive astronomical and planetary observations.he was one of the individuals whose work helped overturn that belief in favor of a heliocentric model of the universe, with the sun at the center. -
1564
Galileo
GAlileo studied the moons around jupiter. plosito ,lio, -
1570
hans lipppershey
was a German-Dutch spectacle-maker. He is commonly associated with the invention of the telescope, because he was the first one who tried to obtain a patent for it. -
1571
johannes kelper:
He was an astronomer who discovered three major laws of planetary motion, conventionally designated as follows the planets move in elliptical orbits with the Sun at one focus the time necessary to traverse any arc of a planetary orbit is proportional to the area of the sector between the central body and that arcand there is an exact relationship between the squares of the planets’ periodic times and the cubes of the radii of their orbits. -
Refraction Telescope
A telescope that uses a converging lens to collect light. -
sir isaac newton
known for developing the calculus and for his law of gravitation and his three laws of motion. -
giovanni cassini
Discovered the moons around satern He also designated Saturn IV. -
wiiam herchel
He constructed a reflecting telescope, which led to his discovery of the planet Uranus two of its satellites, and two of the satellites of Saturn. -
percival lowell
Astronomer who fueled speculation that there were canals on Mars. -
Ejnar Herschel
Classified types of stars by relating their color to their absolute brightness.He thought giant stars could exist. -
albert einstien
He developed the theory of relativity, one of the two pillars of modern physics. His work is also known for its influence on the philosophy of science. -
edwin hubble
He played a crucial role in establishing the fields of extragalactic astronomy and observational cosmology and is regarded as one of the most important astronomers of all time. -
karl jansky
He was a radio engineer who in August 1931 first discovered radio waves emanating from the Milky Way. He is considered one of the founding figures of radio astronomy. -
John Glenn
He became the first American to orbit the Earth, circling it three times. -
neil armstrong
First american to walk on the moon. (American) -
Sputnik
The importance of sputnik to the U.S in the midst of the cold war,Russia was successful in launching the first satellite into space it orbit earth. It was important because it began the Race to space. -
apollo Missions
The Apollo program was designed to land humans on the Moon and bring them safely back to Earth. -
yuri gagarin
First human (soviet) to orbit earth. -
The Apollo program
Was the third United States human spaceflight program carried out by the National Aeronautics and Space Administration and which accomplished landing the first humans on the Moon from 1969- 1972. -
First Space Shuttle Flight
NASA sent this to space for the first time. -
mars pathfinder expedition
After an uneventful journey, the spacecraft safely landed on the surface of Mars on July 4, 1997. Its landing on the Ares Vallis plain was confirmed at 1:07 p.m -
Cassini orbiter
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spaceX falcon heavy
