In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
Astronauts get taller when they are in space.
224
An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
9
A comet's tail always points away from the sun.
2
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)
88
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115