The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
131
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
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
Pluto is smaller than Russia.
9
Jupiter is bigger than all the other planets combined.
254