The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
The earth rotates more slowly on its axis in March than in September.
145
Summer on Uranus lasts for 21 years.
358
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124