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# What is gravity?

## What is gravity?

Isaac Newton described gravity as an attractive force between massive objects that causes the acceleration of falling bodies.

Albert Einstein described gravity as a consequence of the curved geometry of space and time.

Einstein’s theory has a greater explanatory scope than Newton’s theory because it predicts phenomena that Newton’s force model cannot explain.

Examples of such phenomena are gravitational waves and gravitational time dilation.

### The simulation

See the principle of equivalence in action with the relativistic space sheep of MinuteLabs. You explore how acceleration can make the sheep feel as if they were in a gravitational field: gravity and acceleration are two sides of the same coin!

### The feature

The geometry of a world map is remarkably similar to the geometry of spacetime. I wrote a feature for Lateral Mag in which I explain how curved spaces play tricks on us and how we can use maps as models to teach Einstein's theory of gravity and curved spacetime.

### The explainer

General relativity connects gravity to the geometry of space and time. This connection gives often rise to conceptual confusions. Together with colleagues in Australia and Germany, I have tried to clarify confusing concepts related to gravity.

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