If two pieces of metal touch in space, they become permanently stuck together.
808
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
There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
20
There are more nerve cells in the human brain than there are stars in the Milky Way.
349
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
In 1859, the largest known geomagnetic storm struck the Caribbean, causing an aurora and telegraphs could even operate without a power source.
25