One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
131
A comet's tail always points away from the sun.
2
The Earth gets 100 tons heavier every day due to falling space dust.
673
The earth travels through space at 660,000 miles per hour.
189