The light hitting the earth right now is 30 thousand years old.
163
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
Astronauts cannot burp in space.
232
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 takes eight and a half minutes for light to get from the sun to earth.
159
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
Summer on Uranus lasts for 21 years.
358