Sound doesn't travel in space.
255
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
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
Summer on Uranus lasts for 21 years.
358
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147