41% of the moon is not visible from earth at any time.
103
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
If two pieces of metal touch in space, they become permanently stuck together.
808
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
Astronauts cannot burp in space.
232
The population of the Earth has more than doubled since 1950.
151
Summer on Uranus lasts for 21 years.
358
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127