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624 BCE
Thales of Miletus
Thales was a legendary philosopher who captured a lot of records from Egypt that would be used later on. -
310 BCE
Aristarchus of Samos
He discovered that the sun was located in the center of the Universe and wanted to know the distance between the Earth and the sun. -
100 BCE
Hipparchus
He created trigonometry when he was trying to figure out the sun and moon's orbits and distance to Earth. -
200
Claudius Ptolemy
Claudius created a model called the Ptolemaic system that showed that the Earth was in the middle of the universe. -
930
Abd al-Rahman-al-Sufi
Abd contributed to Ptolemy's star list with his brightness/magnitude estimates that were sometimes different from Ptolemy's. -
1072
Omar Khayyam
Omar created a calendar that would be accurate forever by watching the sky and measuring the length of a year. -
1473
Nicolaus Copernicus
He developed his own model of the planetary system to prove that the Sun was in the middle of the universe and not the Earth. -
1564
Galileo Galilei
He built a telescope and was able to see things further like craters, mountains and valleys of the moon. -
Giovanni Cassini
Cassini discovered that Saturn's rings are divided and he would also measure how long Mars and Jupiter would take to rotate. -
Isaac Newton
Newton developed math to describe how the models of Copernicus and Kepler worked. He also made the law of motion and gravitation. -
Joseph Lockyer
Joseph discovered Helium and he knew where some solar eclipses could be seen when he would study the sun's atmosphere. -
Jan Oort
Jan Oort discovered many things of the Milky Way like its mass and its location . He was the reason that the Oort Cloud was created. -
Robert H. Goddard
Robert created and launched the first liquid fueled rocket. -
Stephen Hawking
Stephen used the quantum theory to prove that black holes emit radiation and evaporate. -
Sputnik 2
The Soviet Union launched the first manned satellite with a dog which was the first living passenger. -
Luna 1
The USSR launched Luna 1 spacecraft and even though it missed , it was the first artificial man made object to leave Earth's orbit. -
Yuri Gagarian
Yuri was the first man in space who completed one orbit on the spacecraft Vostok . -
John Glenn
John made the first U.S manned orbital flight on the third human spaceflight Mercury 6. -
Gemini 1
Gemini 1 was a two seat spacecraft system that was launched in an unmanned flight to test it. -
Luna 9
Luna 9 was the first Soviet unmanned spacecraft that landed on the Moon successfully. -
Apollo 7
The first manned Apollo mission of 11 days was the first mission in the United states to take 3 men into space. -
Apollo 11
The two men sent out landed on the Moon and brought back 47.5 pounds of material from the Moon back into Earth. -
Gaspra asteroid
The Galileo unmanned spacecraft was heading into Jupiter when it passed by the asteroid Gaspra , it caught images and data. -
Pluto Mission
NASA made it's first mission to the dwarf planet Pluto and its Moons to pass 6,200 miles by Pluto. -
Future Mission to Mars
NASA is advancing technology and is developing the Asteroid Redirect Mission to take astronauts to Mars in 2020. -
Resource Limitations
NASA's major issue is the need for resources like food, air, and water on Mars but the transportation from Earth to Mars is too expensive. -
Developing Aviation
NASA is trying to transform aviation by reducing the noise and gases that come with aircraft engines to make it an easier flight. -
International Space Station
After leaving astronauts in Mars for six months and studying their environment , NASA will send humans to live there as well.
