Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
Astronauts cannot burp in space.
232
More than 20 million meteoroids enter Earth's atmosphere every day.
139
If two pieces of metal touch in space, they become permanently stuck together.
808
41% of the moon is not visible from earth at any time.
103
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6