Some asteroids have other asteroids orbiting them.
131
It takes eight and a half minutes for light to get from the sun to earth.
159
The earth travels through space at 660,000 miles per hour.
189
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The earth rotates more slowly on its axis in March than in September.
145
Jupiter's moon Ganymede, is larger than the planet Mercury!
149