An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
Summer on Uranus lasts for 21 years.
358
The earth is .02 degrees hotter during a full moon.
157
Only 55% of Americans know that the sun is a star.
986
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
Sound doesn't travel in space.
255