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
If two pieces of metal touch in space, they become permanently stuck together.
808
On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
7
In 1859, the largest known geomagnetic storm struck the Caribbean, causing an aurora and telegraphs could even operate without a power source.
25
Jupiter is bigger than all the other planets combined.
254
A comet's tail always points away from the sun.
2
The center of the galaxy tastes like raspberries and smells like rum, according to astronomers.
4