If two pieces of metal touch in space, they become permanently stuck together.
808
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Astronauts cannot burp in space.
232
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
Buzz Aldrin’s mother’s maiden name was Moon.
9
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100