Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
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 center of the galaxy tastes like raspberries and smells like rum, according to astronomers.
4
There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
20
