One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
The light hitting the earth right now is 30 thousand years old.
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
Jupiter is bigger than all the other planets combined.
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
Some asteroids have other asteroids orbiting them.
A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
Astronauts cannot burp in space.
If you went out into space, you would explode before you suffocated because there's no air pressure.
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
It takes eight and a half minutes for light to get from the sun to earth.