An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
A comet's tail always points away from the sun.
2
Sound doesn't travel in space.
255
Earth is the only planet in our solar system that's not named after a god or goddess.
17
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
There are more nerve cells in the human brain than there are stars in the Milky Way.
349