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Heliocentric Theory
Nicolaus Copernicus had made up the heliocentric theory while looking at the sky. The heliocentric theory is a a half true statement that stated the sun is the center of our solar system, not the universe. -
First Telescope
First Telescope developed by Hans Lippershey. -
First Man To Look Through Telescope
Galileo was the fireman ever to look through a telescope and find the moon. -
First Reflecting Telescope
Sir Isaac Newton was the first man to create a reflecting telescope. -
First Liquid-Fuel Rocket
Robert Goddard was the first man to launch a liquid-fueled rocket into the sky. -
Period: to
The Space Race
This is the time period when space exploration was real important and when the USA was competing against other countries. The two big main rivals were in the Cold War, USA and Soviet Union. -
Sputnik 1
The Soviet Union (Russia) launches the first ever artificial satellite into Earth's Orbit. -
First Man In Outer Sapce
Yuri was a Russian man who was the first man ever in outer space. -
Apollo 11
Edwin "Buzz" Aldrin and Neil Armstrong were the first two humans EVER to walk on the moon. They we're accompanied by Michael Collins who orbited the moon and awaited the return of the two Astronauts. -
Last Man To Walk on The Moon
Eugene Cernan was the last person to walk on the moon. -
Voyager 2
Voyager 2 was a probe that had been sent to Saturn and took pictures of its rings. -
Space Launch Disaster
When Challenger left the launch pad, it exploded and 7 crew members died. -
Hubble Space Telescope (HST)
The Hubble Space Telescope was named after Edwin Hubble and was the first telescope in outer space. -
Mars Rover
Pathfinder was the first probe that was collecting data on Mars in 1997. -
Cassini
Cassini is a space probe that has been studying saturns rings. -
Landin on a Comet
Rosetta was a space probe that had landed on a comet and collected samples.
