On Earth, we have to contend with our own gravity well when we launch rockets and spacecraft; if a rocket isn't powerful enough to escape its gravity well, it will fall back to Earth.

On Earth, we have to contend with our own gravity well when we launch rockets and spacecraft; if a rocket isn't powerful enough to escape its gravity well, it will fall back to Earth.

The moon has a surface gravity of around 1.62 meters per second squared, according to NASA. In comparison, the Earth has a surface gravity of approximately 9.8 meters per second squared. Need a break?

An artist's impression of Earth's gravity well. The idea that gravity is the result of the curvature of space-time is a core principle of Einstein's theory of general relativity.

Gravity — that invisible force that draws objects to the center of the Earth — is not uniform across the planet, data shows.

NASA scientists have discovered an electric field encompassing Earth’s atmosphere that is as "fundamental" as gravity -- and could even give clues about possible life on other planets.

There is a “gravity hole” in the Indian Ocean — a spot where Earth’s gravitational pull is weaker, its mass is lower than normal, and the sea level dips by over 328 feet (100 meters).

An newly discovered asteroid will be captured by Earth's gravity this fall. The "mini-moon" will spend about two months in Earth's orbit, before being flung back on its normal path around the sun.