The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
Astronauts cannot burp in space.
232
Sound doesn't travel in space.
255
A comet's tail always points away from the sun.
2
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194