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
Summer on Uranus lasts for 21 years.
358
If two pieces of metal touch in space, they become permanently stuck together.
808
Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12
Lightning strikes about 6,000 times per minute on this planet!
158
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
Jupiter is bigger than all the other planets combined.
254