Mars had an oxygen-rich atmosphere around 4 billion years ago
13
It would take more than 150 years to drive a car to the sun.
569
The earth rotates more slowly on its axis in March than in September.
145
An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
9
41% of the moon is not visible from earth at any time.
103
The Earth gets 100 tons heavier every day due to falling space dust.
673
Summer on Uranus lasts for 21 years.
358