If you’re wondering, there’s only **approximately 31,500,000 seconds** in a year, and if you multiply that by 186,000 (the distance light travels per second) you get 5.9 trillion miles (9.4 trillion km) – the distance light travels in one year.

Also, how far can light travel in a day?

It really is an incredibly long distance – a light year is about 6 trillion miles, or almost 10 trillion kilometers. How to calculate it. You start out at the speed of light, that is **about 186,000 km** per second. Then multiply that by 3,600 seconds in an hour.

How many years is 1 light year?

It’s about 9 trillion kilometers (or about 6 trillion miles).[note **1**] As defined by the International Astronomical Union (IAU), a **bright**–**year** is the distance that **bright** travels in vacuum in a Julian **year** (365.25 days).[2] Because it contains the word **year**, the term **bright**–**year** is sometimes misinterpreted as a

How far can the light travel?

The speed of light in a vacuum is **186,282 miles** per second (**299,792 kilometers** per second), and theoretically nothing can travel faster than light. In miles per hour, the speed of light is, well, a lot: about 670,616,629 miles per hour. If you could travel at the speed of light, you could circle the earth 7.5 times in a second.

## How long would it take to reach Alpha Centauri at the speed of light?

The journey to Alpha Centauri B’s orbit would take time **about 100 years**, at an average speed of about 13411 km/s (about 4.5% of the speed of light) and another **4.39 years** would be necessary for the data to reach the earth.

## How fast can you fly in space?

Using a chemical propulsion system, it took the Apollo astronauts about 2.5 days to get to the moon, traveling at a faster-than-lunar speed **39,000km/h** (more than **24,000km/h**). The Space Shuttle uses a chemical propulsion system based on both liquid and solid propellants.

## How long would it take to travel across the galaxy at the speed of light?

It would take time **100,000 years** to cross the Milky Way at the speed of light, but it is impossible to reach that speed. If someone could travel at 99% the speed of light, it would take time **about 101,000 years** on Earth to observe this journey, but for the person on the spaceship it will only be permanent **14,000 years**.

## How far away is the farthest star?

Most widely known galaxy discovered in the universe. Galaxy MACS0647-JD (inset) appears very young and is only a fraction of the size of our own Milky Way. The galaxy is about **13.3 billion light years** from Earth, the most distant galaxy known to date, and formed 420 million years after the Big Bang.

## What is a light year away?

ONE **bright**–**year** is a unit of distance. That’s the distance **bright** can travel in one **year**. **Bright** moves at a speed of about 300,000 kilometers (km) per second. So in one **year**, it can travel about 10 trillion km.

## How long would it take to get to Proxima Centauri at the speed of light?

It is moving away from the sun at a speed of 17.3 km/s. If Voyager traveled to Proxima Centauri at that speed, it would take over **73,000 years** arrive. If we could travel at the speed of light, an impossibility due to special relativity, it would still take time **4.22 years** arrive!

## How long does it take to travel one light year at the speed of light?

Multiply the number of seconds in a year by the number of miles or kilometers that light travels **one second**, and there you have it: a light year. It’s about 5.88 trillion miles (9.5 trillion km).

## How long does it take for 4 light years?

A light year is (roughly) 6 trillion miles, so the distance we need to travel is 6 trillion miles/light year times 4 light years, or 24 trillion miles. So this journey would take 1.2 billion hours. There are 24 hours a day and **365.25 days** per year, so this time in years is 137,000 years.

## How long is 1 light year in years?

The light year is a unit of length used to express astronomical distances. It’s about 9.5 trillion kilometers or 5.9 trillion miles. As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in a vacuum in one Julian year (**365.25 days**).

## How many seconds is a light year?

In one **year** there are 365 days with 24 hours. Every hour has 60 minutes and every minute has 60 **seconds** long. So, 60 s/min x 60 min/h x 24 hrs/day x 365 days equals 31,536,000 s. This **many seconds** is an even greater number than the number of miles **bright** goes into one **second**!

## How long does light take for a light year?

That duration is a bit of an issue, as it makes space exploration a painfully slow process. Even if we climbed aboard the Space Shuttle Discovery, which can travel 5 miles per second, it would take us **about 37,200 years** to go a light year.

## How many light years does it take to reach Pluto?

It is most commonly used for distances to stars and other galaxies. The nearest star is **4.2 light years** away from our sun. We are 8.3 light minutes from the sun. the distance to the outermost planet Pluto is about 13 light hours.

## How long does it take to travel 40 light years away?

Or about 1/17,000th the speed of light. Therefore, it would take 1 light year to travel at the speed Voyager 1 travels **17,000 years**. Going 40 light years would take **700,000 years**. **All answers refer to an observer on Earth.

## How long would it take you to get to Jupiter?

The Galileo spacecraft launched in October 1989. It narrowly took over **six years** to reach the gas giant, which arrived in December 1995. But the ship took a very circuitous route, covering a distance of 2.5 billion miles. It traveled around Venus, Earth and the asteroid Gaspra to reach Jupiter.

## How long would it take you to travel a light year?

It cruises at around 36,373 miles per hour. A light year is 5.87849981×1012 miles. (That’s 5,878,499,810,000 miles or nearly 6 trillion miles). So it would take New Horizons **18,449 years** travel a light year.

## How long would it take us to get to Mars?

The journey from Earth to Mars takes time **about 300 days**. Every **2 years** Mars is at its closest point, just 55 million km from Earth, and it’s the ideal time to send a spacecraft. The travel time depends on the positions of the planets and how much fuel you are willing to expend.

## How many kilometers is it from Earth to Pluto?

7.5 billion kilometers

## How long would it take you to reach Pluto?

The distance between Earth and Pluto is at least 29 astronomical units. An AU is defined as 149597870700 meters. If you’re a reasonably average hiker, you can do about 6 kilometers per hour, which means you need 24932978.**45 hours** or about 2844,**28 years** run to Pluto.

## How long will it take us to travel one light year?

Mankind’s fastest spaceship to date is traveling at 53,000 km/h. At this speed it takes about **6 hours** go as far as light comes in **one second**. That’s a ratio of one in 21,600. So that means that current technology could take us 43,000 years from now to our nearest neighbor, which is 2 LY away.

## How far away is the nearest star?

The inner binary appears to the unaided eye as a single star, the third brightest in the night sky, but it lies **4.37 light years** from the sun. Faint Proxima Centauri is the one who only claims the honor of being our true closest stellar neighbor **4.24 light years** a way.