The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
Some asteroids have other asteroids orbiting them.
131
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
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
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
A 100-pound person on Earth would weigh 38 pounds on Mars.
102