In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6
The earth travels through space at 660,000 miles per hour.
189
There is a mass reservoir of water floating in space that is 100,000 times bigger than our sun and holds 140 trillion times more water than all of our oceans.
11
The sun is 330,330 times larger than the earth!
190
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
9