Life's Little Mysteries

Is There Gravity in Space?

gravity, space
Gravity in space exists, but is very weak. (Image credit: NASA.)

Sure! Gravity is everywhere. The effect diminishes with distance, but it never goes away.

So the term "zero-g" is a misnomer. What really happens to astronauts (or satellites) is they fall sideways as they're falling toward the planet, a setup that keeps them in orbit and feeling weightless.

Where the space station roams, some 250 miles (400 kilometers) up, the force of gravity is about 90 percent what it is here on the surface.

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Live Science Staff
For the science geek in everyone, Live Science offers a fascinating window into the natural and technological world, delivering comprehensive and compelling news and analysis on everything from dinosaur discoveries, archaeological finds and amazing animals to health, innovation and wearable technology. We aim to empower and inspire our readers with the tools needed to understand the world and appreciate its everyday awe.