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
In 1859, the largest known geomagnetic storm struck the Caribbean, causing an aurora and telegraphs could even operate without a power source.
25
When a massive power outage struck southern California in the 1990s, Los Angeles residents reportedly called 911 to express alarm about strange clouds hovering overhead; they were seeing the Milky Way for the first time.
31
If two pieces of metal touch in space, they become permanently stuck together.
808
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The light hitting the earth right now is 30 thousand years old.
163