The earth rotates more slowly on its axis in March than in September.
145
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
It takes eight and a half minutes for light to get from the sun to earth.
159
Lightning strikes about 6,000 times per minute on this planet!
158
The Earth gets 100 tons heavier every day due to falling space dust.
673
41% of the moon is not visible from earth at any time.
103