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140
Back then...
Aristotte and other Greeks think the univse was prefect. -
Period: 140 to
Early Astronomers
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345
Circles
Ptolemy said that the planet goes in little to big as they revole Earth. That is geocentic. -
Jan 1, 1545
Helocentric
Copernicus was the first one to think a helocentric Solar Syterm. Helocentic is when the Earth revole the sun. -
Around
Newton found that gravity and inesta what makes the planets orbit. -
Different
Bruno was burn in the stake for believing there is different planet and star like us. -
Telicope
Galio made the teilcope and supported Copernicus helocenteric thing. -
Milky Way
Wright thought that there are other galxies like ours. -
Uranus
Herschel found Uranus, the seventh planet. -
V-2 rocket
It was the first rocket to leave Earth's atmosphere. Over time, they are trying to impove it. -
Mars
Marnier 4 was the first sussesful mission to explore Mars. -
Sputniks
Sputnik 1 was the first artificial satellite. Sputnik 2 crarried a dog to space and didn't survive. -
Explorer 1
It was a satellite and a rocket lander and stayed in space till 1967. -
Orbit
Glenn was the first American to orbit Earth. -
Landed
Luna 9 was a Russian spacecraft was first to land in the moon. -
Zond 5
Zond 5 was the first spacecraft to orbit the Moon. -
Apollo 8
Apollo 8 carried the first people to orbit the Moon. -
Moon
Armstrong and Aldrin was first on the moon. -
Viking 1 & 2
They did some testing the find that there is no life on Mars. The Vikings 1 and 2 lasted for three and four years. -
Space Shuttle
Columbia was the first space shuttle but crashed in 2003. -
Planet PSR B1620-28
It was the first planet found in a star cluster. -
Period: to
Space Station
They bulit the space station so they can have their stuff and work there. -
Jupiter
Marcy and Bulter found a different solar syestem is like our Jupiter. -
Now
Scienceists are finding new planets.