A comet's tail always points away from the sun.
2
The light hitting the earth right now is 30 thousand years old.
163
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
It would take more than 150 years to drive a car to the sun.
569
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
From the nitrogen in our DNA, to the calcium in our teeth, the iron in our blood, to the carbon in our apple pies - all were made in the interiors of collapsing stars; we're all made of stardust.
22
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46