An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
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
Summer on Uranus lasts for 21 years.
358
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
The Earth gets 100 tons heavier every day due to falling space dust.
673
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
If two pieces of metal touch in space, they become permanently stuck together.
808
Today's top fuel dragsters take off with more force than the space shuttle.
120