In 1859, the largest known geomagnetic storm struck the Caribbean, causing an aurora and telegraphs could even operate without a power source.
25
It 'snows' metal on Venus.
13
A neutron star (what remains after a Super Nova) is so dense that a portion of it the size of a sugar cube would weigh as much as all of humanity, or more than all the cars in the United States.
5
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Summer on Uranus lasts for 21 years.
358
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46