Pluto is smaller than Russia.
9
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
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
It 'snows' metal on Venus.
13
Summer on Uranus lasts for 21 years.
358
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46