Pluto is smaller than Russia.
9
If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
10
A comet's tail always points away from the sun.
2
In 1859, the largest known geomagnetic storm struck the Caribbean, causing an aurora and telegraphs could even operate without a power source.
25
The light hitting the earth right now is 30 thousand years old.
163
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
Mars had an oxygen-rich atmosphere around 4 billion years ago
13