Gravity is the force that pulls objects with mass toward one another. In everyday life, it keeps you on the ground and makes things fall.
In Einstein’s general relativity, gravity is better described as the way mass and energy curve spacetime. Objects then move along that curved geometry, which is why planets orbit stars and light can bend near massive bodies.
The short version is that gravity is one of the most familiar forces in life and one of the strangest in theory. You feel it constantly, even if the full explanation takes a little math.
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