It 'snows' metal on Venus.
13
Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12
There are more nerve cells in the human brain than there are stars in the Milky Way.
349
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
Jupiter is bigger than all the other planets combined.
254