A comet's tail always points away from the sun.
2
Astronauts cannot burp in space.
232
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
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