Jupiter's moon Ganymede, is larger than the planet Mercury!
149
More than 20 million meteoroids enter Earth's atmosphere every day.
139
Sound doesn't travel in space.
255
Astronauts get taller when they are in space.
224
There's a mysterious dwarf planet between Mars and Jupiter called 'Ceres' which has never been visited by spacecraft or photographed in detail, however, Earth-bound telescopes reveal a large bright shining spot on the surface of this planet, the origin and nature of which are unknown.
5
Pluto is smaller than Russia.
9
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13