Sound doesn't travel in space.
255
The Earth gets 100 tons heavier every day due to falling space dust.
673
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
If two pieces of metal touch in space, they become permanently stuck together.
808
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
Jupiter is bigger than all the other planets combined.
254