A cosmic year is the time it takes the sun to revolve around the center of the Milky Way (between 225-250 million years).
Amazing fact: Jupiter
The gravity on Jupiter is 2.6 times that of the Earth.
Amazing fact: metal
If two pieces of metal touch in space, they get stuck together permanently.
Amazing fact: moon
41% of the moon is not visible from earth at any time.A full moon is nine times brighter than a half moon.
Amazing fact: Black hole
Black holes come in three sizes: stellar mass, intermediate mass and supermassive.
