The heart of an astronaut actually gets smaller when in outer space.
216
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
The earth travels through space at 660,000 miles per hour.
189
More than 20 million meteoroids enter Earth's atmosphere every day.
139
An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
9
If two pieces of metal touch in space, they become permanently stuck together.
808
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219