The light hitting the earth right now is 30 thousand years old.
163
Pluto is smaller than Russia.
9
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
If aliens located 60-65 million light years away from us, looked at earth through a really powerful telescope today, they would see dinosaurs!
18
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
41% of the moon is not visible from earth at any time.
103
There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
20