The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
41% of the moon is not visible from earth at any time.
103
It takes eight and a half minutes for light to get from the sun to earth.
159
Jupiter's magnetosphere is the largest single structure inside the Solar System. If you could see it with your eyes, it would appear larger than our full Moon.
8
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
The earth rotates more slowly on its axis in March than in September.
145
The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
131