The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
The light hitting the earth right now is 30 thousand years old.
163
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
More than 20 million meteoroids enter Earth's atmosphere every day.
139
The earth travels through space at 660,000 miles per hour.
189
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6