Only 55% of Americans know that the sun is a star.
986
Astronauts get taller when they are in space.
224
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
10
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
Summer on Uranus lasts for 21 years.
358
Pluto is smaller than Russia.
9
More than 20 million meteoroids enter Earth's atmosphere every day.
139