Q:

# How is gravity created?

A:

What causes gravity remains a mystery. Einstein’s general theory of relativity states a massive object curves space-time, causing other bodies to move toward it. This theory helps explain why gravity can act at a distance and why the strength of its force lessens as distance increases. Many questions about the exact nature of gravity still need answers.

## Keep Learning

Newton famously described the mechanics of gravity using the inverse square law, stating that the attractive force between two masses is proportional to the square of the distance between them. His equation works well, but never addresses why gravity works, or why the distance between the two masses matters. Einstein’s theory addressed the distance issue, showing how gravity works using the curvature of space-time, and why it gets stronger as the two objects get closer. Einstein’s theory also predicts gravitational waves that would propagate the force, but these remain theoretical.

Gravity is one of the least understood of the four fundamental forces that make up the Standard Model. Unlike the strong and weak nuclear forces that hold atoms together, the range of gravity is infinite, yet it is the weakest of the four forces. Electromagnetism can easily overcome the attraction of gravity, but gravitational force pulls matter together to form planets, stars and galaxies. Electromagnetism also works at a distance, but it can be blocked or transformed, while gravity remains constant and propagates uniformly. Electromagnetic forces attract and repel, but gravity only attracts. So, while the mechanics of gravity are well understood, the true nature of gravity has yet to be explained.

Sources:

## Related Questions

• A: If the Earth were to suddenly stop spinning, it would be the high winds, rather than gravity, that would immediately remove all traces of life from the Ear... Full Answer >
Filed Under:
• A: Ocean currents can be formed by wind, gravity, earthquakes and temperature and salinity variations that cause density differences in the water mass, accord... Full Answer >
Filed Under:
• A: Mass movement is the bulk movement of rock and soil debris down a slope in response to gravity or the sinking of the Earth's surface in a vertical directio... Full Answer >
Filed Under:
• A: A mystery refers to any unexplained problem. Mysteries can be solved through critical thinking and analysis. Mystery novels focus around solving a specific... Full Answer >
Filed Under:
PEOPLE SEARCH FOR