If you went out into space, you would explode before you suffocated because there's no air pressure.
149
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
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 Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
It takes eight and a half minutes for light to get from the sun to earth.
159
Some asteroids have other asteroids orbiting them.
131