Gravity is an invisible force that attracts all objects with mass toward each other. Because of gravity, apples fall to the ground, ocean water stays on Earth, and we can walk instead of floating.

Earth pulls you in with gravity, and you also pull on Earth—only it’s so small that you can’t feel it. The larger the mass, the stronger the pull. That’s why Jupiter has far stronger gravity than Earth.

Einstein explained that gravity isn’t just a pull, but a curvature of space and time. Massive objects bend the space around them, and other objects follow along that curvature.

Without gravity, there would be no Moon’s orbit, no solar system, and no life as we know it.

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