Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
The sun is 330,330 times larger than the earth!
190
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
Mars had an oxygen-rich atmosphere around 4 billion years ago
13