Sound doesn't travel in space.
255
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
Astronauts cannot burp in space.
232
Jupiter is bigger than all the other planets combined.
254
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
Lightning strikes about 6,000 times per minute on this planet!
158
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124