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Jan 1, 1543
Heliocentric Model
Nicolaus Copernicus introduced the idea that the Sun is the center of the solar system. -
First Telescopic Observation of The Night Sky
Galileo Galilei first looked at the night sky with a telescope. -
Newton's Laws of Motion
Sir Isaac Newton created 3 physical laws that form the basics of motion, including travel beyond Earth. -
Nebular Hypothesis
Pierre Simon de Laplace introduced the idea that solar systems form from nebulae. -
First Explanation of Rocket Mechanics
William Moore published the first description of a rocket based on Newton's 3rd law of motion. -
Sputnik 1
First artificial satellite put in orbit. The Soviet Union was involved. -
Explorer 6
First picture of Earth from orbit. The U.S. was involved. -
Vostok 1
Yuri Gagarin was the first human in space. -
Apollo 11
First man on the moon. Neil Armstrong, Buzz Aldrin, and Mike Collins were involved. -
Voyager 1
First photo of the entire solar system. The U.S. was involved. -
Hubble Space Telescope
First telescope in space. The U.S. and Europe were involved. -
Galileo
First orbit of Juipter. The U.S. was involved. -
International Space Station
First multinational space station and the largest man-made object in space. The U.S., Russia, Europe, Japan, and Canada were involved. -
MESSENGER
First orbit of Mercury. The U.S. was involved.