An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Summer on Uranus lasts for 21 years.
358
The Earth gets 100 tons heavier every day due to falling space dust.
673
A neutron star (what remains after a Super Nova) is so dense that a portion of it the size of a sugar cube would weigh as much as all of humanity, or more than all the cars in the United States.
5
The light hitting the earth right now is 30 thousand years old.
163
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
Sound doesn't travel in space.
255
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