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.

Gravity Well. David Mikkelson Published Oct. 3, 2015. NEWS: ... You know, that's a complex set of things, just the way the earth rotates on its axis, how far away it is from the sun.

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 heavier you are, the steeper the sides of the trampoline well. That is why really massive things in the universe – like the Sun or black holes – have stronger gravity than Earth.

The heavier you are, the steeper the sides of the trampoline well. That is why really massive things in the universe — like the Sun or black holes — have stronger gravity than Earth.

At Earth’s end, that hill will feel like a 90-degree cliff, pulling you back to the center. But if you could make it over the edge, and stand on the thin outer part of the disc, you'll feel ...

I had an interesting thought, spurred on by a discussion I ran across online about firing guns in space. Apparently, smokeless powder contains its own ...

Here's why the force of gravity pulls us down rather than up. The answer involves Einstein and the bendy realm of space-time.

Gravity is something every person on Earth intuitively understands: It is what keeps you on the ground. But how come gravity pulls down, rather than pushes up? Einstein came up with the answer.