# Often asked: How Fast Does Gravity Travel?

## Does gravity travel faster than light?

As long as gravitational waves and photons have no rest mass, the laws of physics dictate that they must move at exactly the same speed: the speed of light, which must equal the speed of gravity. The speed of gravity is exactly the speed of light, and physics wouldn’t have allowed it to be any other way.

## What speed does gravity travel at?

The best results, at the present time, tell us that the speed of gravity is between 2.993 × 10^8 and 3.003 × 10^8 meters per second, which is an amazing confirmation of General Relativity and a terrible difficulty for alternative theories of gravity that don’t reduce to General Relativity!

## Does gravity travel instantly?

In the simple newtonian model, gravity propagates instantaneously: the force exerted by a massive object points directly toward that object’s present position. The net result is that the effect of propagation delay is almost exactly cancelled, and general relativity very nearly reproduces the newtonian result.

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## Does anything travel faster than light?

Albert Einstein’s special theory of relativity famously dictates that no known object can travel faster than the speed of light in vacuum, which is 299,792 km/s. Unlike objects within space–time, space–time itself can bend, expand or warp at any speed.

## Is black hole faster than light?

Using NASA’s Chandra X-ray Observatory, astronomers have seen that the famous giant black hole in Messier 87 is propelling particles at speeds greater than 99% of the speed of light. When matter gets close enough to a black hole, it enters into a swirling pattern called an accretion disk.

## Does speed affect gravity?

When an object is traveling at a high speed, its resistance to acceleration does not change and its ability to experience gravity does not change. The mass of an object therefore does not change when it travels at high speed.

## Do heavier objects fall faster?

Acceleration of Falling Objects Heavier things have a greater gravitational force AND heavier things have a lower acceleration. It turns out that these two effects exactly cancel to make falling objects have the same acceleration regardless of mass.

## Does light create gravity?

Light has energy, energy is equivalent to mass, and mass exerts gravitational force. Thus, light creates gravity, i.e. the bending of space-time. Thus, in order for light to generate a gravitational field like that of the Earth, it would need to have the mass (energy) of the Earth.

## Is time related to gravity?

Gravity is not just a force. This effect measures the amount of time that has elapsed between two events by observers at different distances from a gravitational mass. In other words, time runs slower wherever gravity is strongest, and this is because gravity curves space-time.

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## Why is there no gravity in space?

Because space is relatively empty, there is little air to feel whooshing past you as you fall and there are no landmarks to indicate you are moving. The second reason that gravity is not so obvious in space is because objects tend to orbit planets instead of hitting them.

## Can gravity travel?

Gravity works the same way. Shake a mass and the change in the gravitational field — the gravitational wave — propagates at that same speed. “So the fact that the speed of gravitational waves is equal to the speed of electromagnetic waves is simply because they both travel at the speed of information,” Creighton says.

## What is the fastest thing in the universe?

Laser beams travel at the speed of light, more than 670 million miles per hour, making them the fastest thing in the universe.

## How fast is the speed of dark?

Is there such a thing as the speed of dark? In a 2013 study, scientists determined that dark matter should have a speed of 54 meters per second, or 177 feet — slow compared to the speed of light.

## Can humans travel at the speed of light?

We can never reach the speed of light. Or, more accurately, we can never reach the speed of light in a vacuum. That is, the ultimate cosmic speed limit, of 299,792,458 m/s is unattainable for massive particles, and simultaneously is the speed that all massless particles must travel at.