Buzz Aldrin’s mother’s maiden name was Moon.
9
The heart of an astronaut actually gets smaller when in outer space.
216
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
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
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
Venus is the only planet that rotates clockwise.
310
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118