A comet's tail always points away from the sun.
2
Jupiter is bigger than all the other planets combined.
254
Astronomer Percival Lowell believed that he was the first person to observe canals on Venus, but because of a faulty adjustment of the eyepiece on his telescope, he was in fact looking at the blood vessels in his own eye.
4
The ashes of the man who discovered Pluto are currently en route to dwarf planet, scheduled to arrive on the 14th of July, 2015.
11
There are more nerve cells in the human brain than there are stars in the Milky Way.
349
The light hitting the earth right now is 30 thousand years old.
163