Jupiter's moon Ganymede, is larger than the planet Mercury!
149
There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
20
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
Only 55% of Americans know that the sun is a star.
986
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
Astronauts get taller when they are in space.
224