A comet's tail always points away from the sun.
2
Astronauts get taller when they are in space.
224
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
Astronauts cannot burp in space.
232
More than 20 million meteoroids enter Earth's atmosphere every day.
139
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121