Jupiter's moon Ganymede, is larger than the planet Mercury!
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There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
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An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
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Jupiter is bigger than all the other planets combined.
254
The heart of an astronaut actually gets smaller when in outer space.
216
The earth travels through space at 660,000 miles per hour.
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Astronauts cannot burp in space.
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The center of the galaxy tastes like raspberries and smells like rum, according to astronomers.
4