A 100-pound person on Earth would weigh 38 pounds on Mars.
102
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
The sun puts out more power in 1 second than mankind has ever used within human existence.
14
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
More than 20 million meteoroids enter Earth's atmosphere every day.
139
The earth rotates more slowly on its axis in March than in September.
145
Only 55% of Americans know that the sun is a star.
986