Astronauts get taller when they are in space.
224
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
Astronauts cannot burp in space.
232
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
Jupiter is bigger than all the other planets combined.
254
Sound doesn't travel in space.
255