An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
The Earth gets 100 tons heavier every day due to falling space dust.
673
The sun puts out more power in 1 second than mankind has ever used within human existence.
14
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 approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221