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About 4 light years.

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Sorry. "Light year" is an answer to "how far", not "how long".

Alpha Centauri is about 4 light years away from our solar system and everything in it,

which means that it takes light, radio, and TV from us about 4 years to get there.

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13y ago
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14y ago

The distance to any of the components of the Alpha Centauri multiple-star system is nominally 4.3 light-years. The set-up suggested in the question has a lot of problems. But it can be confidently and accurately stated that light, moving at the speed of light, would take 4.3 years to reach Alpha Centauri.

Horse Isle Answer: 4 years

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14y ago

If we put an astronaut into a spacecraft that leaves the earth at 1/2 the speed of light and continues

at that speed, then he would cover the 4.4 light years distance to Proxima Centauri when our calendar

reads 8.8 years later.

Inside the spacecraft, at 0.5 the speed of light, it would seem like 7.62 years to him.

If he sent us a radio message as soon as he arrived there, we would receive the news from him

13.2 years after he left.

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14y ago

First of all, a spacecraft would not travel a straight line; so the time required for the trip would have to be
longer than the time required to simply travel the straight distance.

But ignoring that little complication, the distance to the Alpha Centauri system is listed as 4.4 light years,
meaning that it takes light 4.4 years to get from here to there.

That tells me that if you travel the same distance at 1/2 the speed of light, it takes (4.4/0.5) = 8.8 years.

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14y ago

If you were moving at the speed of light it would take you 4.37 years to get to Alpha Centauri.

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13y ago

Forgetting about acceleration or deceleration - about 4.243 years

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9y ago

If the trip could be done in a straight line, then 4.2 years.

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11y ago

Approximately 8.5 years.

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13y ago

4.4 years

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14y ago

4.3 years

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Q: If you were moving at the speed of light how long would it take to get to proxima centauri from the sun?
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Which is the closest star to earth not counting the sun?

The closest star to earth is the sun. The next closest is a red dwarf star called Proxima Centauri, much further away. The sun is around 8 minutes away at the speed of light, while Proxima Centauri is around 4.2 years away at the speed of light (light years).


If you could travel at the speed of light how long would it take to travel form our solar system to the nearest star?

The nearest star (besides our sun) is 4.24 light-years from earth. This means that light emitted for this star takes 4.24 years to reach earth. Some stars are over millions of light-years away. The closest star is the sun. Beyond that is Proxima Centauri, at 4.24 light-years away. Alpha Centauri is at 4.37 light-years, and beyond that is Barnard's star at 5.97 light-years away. 4.24 light-years = roughly 24,925,000,000,000 miles (rounded to the nearest billion miles) lol


What is the closet star to earth?

Technically speaking, the sun is the closest star to Earth..The next closest known star to the Earth is Proxima Centauri, red dwarf starapproximately 4.2 light years from Earth ... only about 278,000 times as farfrom us as the Sun is. See the related link below for further information aboutProxima Centauri..The next two closest known stars comprise the binary star system called AlphaCentauri. Alpha Centauri is 4.4 light years from Earth..It is postulated that another star, a red or brown dwarf star, closer to the Earththan Proxima Centauri, orbits the sun in a highly elliptical orbit. This possiblestar is code named Nemesis. See the related link below for further informationabout a companion star.That would be the Sun, an average everyday star. The next closest star to earth is Alpha Centauri, which is only four light-years away.


If you traviled at the speed of light how long would if take to get to Alpha Centauri?

4.37 years.


How long does it take light to travel from Alpha Centaury the nearests star to your sun to your solar system?

4.3 light years===========================Sorry. "Light year" is an answer to "how far", not "how long".Alpha Centauri is about 4.4 light years away from our solar system and everything in it,which means that it takes AC's light about 4.3 years to get here.

Related questions

How long will a spaceship traveling at the speed of light reach Proxima Centauri?

About 4.2 years.


Which is the closest star to earth not counting the sun?

The closest star to earth is the sun. The next closest is a red dwarf star called Proxima Centauri, much further away. The sun is around 8 minutes away at the speed of light, while Proxima Centauri is around 4.2 years away at the speed of light (light years).


What is the closets to earth?

The closest star to earth is the sun. The next closest is a red dwarf star called Proxima Centauri, much further away. The sun is around 8 minutes away at the speed of light, while Proxima Centauri is around 4.2 years away at the speed of light (light years).


The nearest star other than the sun close to earth is?

The next closest is a red dwarf star called Proxima Centauri, much further away. The sun is around 8 minutes away at the speed of light, while Proxima Centauri is around 4.2 years away at the speed of light (light years).


How close is the nearest star other than the sun to earth?

The next closest is a red dwarf star called Proxima Centauri, much further away. The sun is around 8 minutes away at the speed of light, while Proxima Centauri is around 4.2 years away at the speed of light (light years).


Why is the sun much brighter than any other star?

The brightest star in the sky is the sun, as it is by far the closest. The next closest is a red dwarf star called Proxima Centauri, much further away. The sun is around 8 minutes away at the speed of light, while Proxima Centauri is around 4.2 years away at the speed of light (light years).


How many miles away is proxima centauri from earth?

Proxima Centauri is about 4.2 light years from Earth.About 4 x 1013 kilometers (40,000,000,000,000)About 2.5 x 1013 miles (25,000,000,000,000)About 265,606 AUAbout 1.3008808 ParsecsIf the Earth was only an inch from the Sun, at the same scale, Proxima Centauri would be 4.2 miles away.It is the closest star to us, after the Sun.


Name the star nearest to earth except sun?

Proxima centauri.After the Sun (8 minutes away at light speed), the next closest star is Promixa Centuri, at 4 1/2 light years away


What star is the closest to us in the milky way?

The Sun is "really" the closest star at 150,000,000 km (93,000,000 miles)Proxima Centauri is the closest star to us, at a distance of approximately 4.2 light years.(Proxima is Latin for "next to" or "nearest to")Alpha Centauri is the closest star system to us at a distance of approximately 4.3 light yearsThe Centauri system is a triple star system Centauri A and B have a mean separation of 11 AU's and are similar in size and temp to the Sun.Centauri C is a red dwarf it can not be seen with the unaided eye and was not discovered until 1918See related link for more information.


If you could travel at the speed of light how long would it take to travel form our solar system to the nearest star?

The nearest star (besides our sun) is 4.24 light-years from earth. This means that light emitted for this star takes 4.24 years to reach earth. Some stars are over millions of light-years away. The closest star is the sun. Beyond that is Proxima Centauri, at 4.24 light-years away. Alpha Centauri is at 4.37 light-years, and beyond that is Barnard's star at 5.97 light-years away. 4.24 light-years = roughly 24,925,000,000,000 miles (rounded to the nearest billion miles) lol


Proxima centauri is 4.5 light -years from earth how far is that in kilometers?

4 years at the speed of light, 300,000 km per second, is 4x365x24x3600x300000 kilometres. Answer is a little over 37 trillion km. 1 light-year is 9.4605375 x 1012 km


If you were moving at the speed of light how long would it take you to get to the Alpha Centauri?

Horse Isle Answer: 4 years Answered by QuirkyTulip on brown server!!