# Often asked: How Long Does It Take To Travel 1 Light Year?

## How long is a light-year in Earth years?

Coe et al. For most space objects, we use light-years to describe their distance. A light-year is the distance light travels in one Earth year. One light-year is about 6 trillion miles (9 trillion km).

## How long will it take Voyager 1 to travel a light-year?

A light-year is 9.5 trillion kilometers. By division, that means it’s going to take Voyager 17,720 years to travel ONE light year. That’s 80,000 years to reach Alpha Centauri, 4.5 light years away.

## How many light-years can we travel?

Even if the fabric of space didn’t change over time, there are plenty of objects we can see today that could be farther away than 13.8 billion light-years. The only catch is that their light could travel for 13.8 billion light-years at most; how the objects move after emitting that light is irrelevant.

## How fast can we travel in space?

But Einstein showed that the universe does, in fact, have a speed limit: the speed of light in a vacuum (that is, empty space). Nothing can travel faster than 300,000 kilometers per second (186,000 miles per second).

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## Where is Voyager 2 right now 2020?

On October 29, 2020, NASA re-established contact with its Voyager 2 spacecraft, launched from Earth in 1977. The craft is now traveling more than 11.6 billion miles (18.8 billion km) from Earth. It is beyond the heliopause, or boundary region, where the sun’s influence ends and the interstellar medium begins.

## Can Voyager 1 come back?

How long can Voyager 1 and 2 continue to function? Voyager 1 is expected to keep its current suite of science instruments on through 2021. Voyager 2 is expected to keep its current suite of science instruments on through 2020. The radioisotope thermoelectric generator on each spacecraft puts out 4 watts less each year.

## Where is Voyager 2 now?

The spacecraft is now in its extended mission of studying interstellar space; as of September 16, 2021, Voyager 2 has been operating for 44 years, 1 month and 1 day, reaching a distance of 127.75 AU (19.111 billion km; 11.875 billion mi) from Earth.

## Can we travel at the speed of light?

This is also the speed that any form of pure radiation, such as gravitational radiation, must travel at, and also the speed, under the laws of relativity, that any massless particle must travel at. We can never reach the speed of light. Or, more accurately, we can never reach the speed of light in a vacuum.

## How fast can humans travel without dying?

“There is no real practical limit to how fast we can travel, other than the speed of light,” says Bray. Light zips along at about a billion kilometres per hour.

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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.

## 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 long is one hour in space?

The time dilation on that planet—one hour equals 7 Earth years —seems extreme. To get that, you’d apparently need to be at the event horizon of a black hole.