Sound doesn't travel in space.
255
41% of the moon is not visible from earth at any time.
103
It would take more than 150 years to drive a car to the sun.
569
The Earth gets 100 tons heavier every day due to falling space dust.
673
The sun puts out more power in 1 second than mankind has ever used within human existence.
14
On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
7
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118