Jupiter's moon Ganymede, is larger than the planet Mercury!
149
The earth travels through space at 660,000 miles per hour.
189
Sound doesn't travel in space.
255
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124
A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)
88
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
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
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219