Gravity Facts

You are about 1 centimeter taller in the morning than in the evening!

Astronauts cannot burp in space.

The heart of an astronaut actually gets smaller when in outer space.

In space, astronauts can cry, but their tears don't flow down their faces. Without gravity, tears form a liquid ball that sticks to the eye, gradually growing larger until it spreads across the nose to the other eye or needs to be wiped away with a towel.

Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.

A 100-pound person on Earth would weigh 38 pounds on Mars.

Due to gravitational effects, you weigh slightly less when the moon is directly overhead.

On April Fool’s Day, 1976, the BBC convinced many listeners that a special alignment of the planets would temporarily decrease gravity on Earth. Phone lines were flooded with callers who claimed they felt the effects.