how many kilometers can light travel in one year?
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How Far Does Light Travel in a Year? As already noted, the speed of light (expressed in meters per second) means that light travels a distance of 9,460,528,000,000 km (or 5,878,499,817,000 miles) in a single year. This distance is known as a “light year”, and is used to measure objects in the Universe that are at a considerable distances from us.
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How many kilometers per second does light travel? How many miles per hour does light travel? Light travels at a whopping 186,000 miles per second or about  669,600,000 miles per hour, to answer your question.    This is very fast, but it still takes the light …from the sun eight  minutes to reach us, and there is a big difference.
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- A lightyear is the distance light travels in vacuum in one Julian year. A light-year is equal to 9,460,730,472,580.8 km (about 9.461 Pm) or about 5,878,625,373,183.61 statute miles or about 63,241.077 AU (often approximated to 63,240 AU) or about 0.306 601 394 parsecs.
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- The speed of light is about 186,000 miles or 300,000 kilometers per second. So, in one year light travels a distance of about 5,880,000,000,000 miles or 9,460,000,000,000 kilometers or 63,240 A.U.. This distance is 1 light-year.For example, the nearest star to us is about 4.3 light-years away.he speed of light is about 186,000 miles or 300,000 kilometers per second. So, in one year light travels a distance of about 5,880,000,000,000 miles or 9,460,000,000,000 kilometers or 63,240 A.U.. This distance is 1 light-year.
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How far can the Hubble Space Telescope see? Since light has a speed of 186,000 miles per second (light can travel about 7 times around the entire earth in 1 second!), light travels about 5,865,696,000,000 miles in just one year. You can attach 9 more zeros to the end of this to get 1 billion light-years and another one for 10 billion light-years.
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How long will it take to travel a light year? If traveling at the speed of light, it will take 17,000 years to  travel 17,000 light years. One light year is about  5,865,696,000,000 miles.
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How long is a light year in terms of miles? one light year 1 ly is the distance that light travels in one year in one second light travels 186282 miles or 299793 km since there are in a tropical year about 31569260 seconds we can find the length of a light year by multiplying velocity by time to give 5 88 trillion miles 9 46 trillion km
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light-year Definition of light–year. 1 : a unit of length in astronomy equal to the distance that light travels in one year in a vacuum or about 5.88 trillion miles (9.46 trillion kilometers)
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Speed of light A light year is the distance light travels in one year. That distance is 5,900,000,000,000 miles. That’s right, five trillion, nine hundred billion miles that light travels in one year. It is often rounded up to 6 trillion miles in a year or that a light year equals a distance of 6 trillion miles.
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What is a light-year? Even in light years, measuring distances across the universe becomes unwieldy. But measuring in something familiar, like miles, is truly humbling. From here to the edge of our vision spans a distance of approximately 276,000,000,000,000,000,000,000 miles. And it’s getting bigger every day. Bottom line: How far is a light-year? It’s the distance a beam of light travels in one year – a distance of six trillion miles. Christopher Crockett Christopher has a Ph.D. in astronomy from the University of California, Los Angeles.
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StarChild Question of the Month for March 2000 A light-year is a unit of distance. It is the distance that light can travel in one year. Light moves at a velocity of about 300,000 kilometers (km) each second. So in one year, it can travel about 10 trillion km.More p recisely, one light-year is equal to 9,500,000,000,000 kilometers.or distances to other parts of the Milky Way Galaxy (or even further), astronomers use units of the light-year or the parsec. The light-year we have already defined. The parsec is equal to 3.3 light-years.
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- Best Answer: Light travels at 186,000 miles per second. Therefore 60x60x24x365=seconds in a year 31,536,000 x 186,000 = 5,865,696,000,000 miles in a lightyear. Source(s): stevensontj · 9 years ago.
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What is a Light Year? Equivalents: 1 light year=5,865,696,000,000 miles. 1 light minute=11,176,920 miles. 1 light second=186,282 miles. To keep numbers manageable, the measurement of a light year is necessary for astronomers in describing the enormous distances between the stars and galaxies of the universe.quivalents: 1 light year=5,865,696,000,000 miles. 1 light minute=11,176,920 miles. 1 light second=186,282 miles. To keep numbers manageable, the measurement of a light year is necessary for astronomers in describing the enormous distances between the stars and galaxies of the universe.
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General Astronomy/Print version That’s very fast. If you could travel at the speed of light, you would be able to circle the Earth’s equator about 7.5 times in just one second! A light-second is the distance light travels in one second, or 7.5 times the distance around Earth’s equator. A light-year is the distance light travels in one year. How far is that? Multiply the number of seconds in one year by the number of miles or kilometers that light travels in one second, and there you have it: one light-year.
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How to measure distance in space? A light year is a unit of distance. It is the distance that light can travel in a year's time which is six trillion miles. Light moves at a velocity of roughly 300,000 kilometers in every second. So in one year, it can travel roughly about 10 trillion km. One light-year is equivalent to 9,500,000,000,000 kilometers.
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How many light years from Earth is Neptune? Now to convert those to light years. One light year is equal to 10^13 km. Therefore, the maximum is 4.649 x 10^9 / 10^13 = 4.64 x 10^-4 lightyears (ly) . The minimum is 4.351 x 10^9 / 10^13 = 4.35 x 10^-4 light years = 0.15888375 light days = 3.81321 light hours = 3 light hours and 49 minutes.
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- Best Answer: A light-year is the distance that light travels in one year. the speed of light is 299,792,458 metres per second which is about 371 million mph. Alpha Centtauri is 4.37 light years away so if you were to travel at the speed of light it would take you 4.37 years to get there from earth.
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- a light year is the distance light will travel in a year which is a long long way light travels 186000 miles a second 300000 kilometers per second so a light second is 186000 miles 300000 kilometers so some quick multiplication gives us one light year as 5878500000000 miles
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- The next brightest looking is about 910 light years away, but the next brightest looking is only about 220 light years away. There is about 5,869,713,600,000 miles in a light year or about 9,445,950,434,502 kilometres. 4 people found this useful.
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- A light-year, also light year or lightyear (symbol: ly) is a unit of length, equal to just under 10 trillion kilometers (10×10 15 meters, 10 petameters or about 6 trillion miles).
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- Multiply the number of seconds in one year by the number of miles or kilometers that light travels in one second, and there you have it: one light-year. It’s about 5.88 trillion miles (9.5 trillion km).
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- A light-year is a unit of distance. It is the distance that light can travel in one year. Light moves at a velocity of about 300,000 kilometers (km) each second. So in one year, it can travel about 10 trillion km. More p recisely, one light-year is equal to 9,500,000,000,000 kilometers.
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- Even further away is the famous “light year,” the distance light travels in one year. I’ll repeat that just in case you have to re-look at the last line. A light year is the distance light travels in one year. That distance is 5,900,000,000,000 miles.That’s right, five trillion, nine hundred billion miles that light travels in one year. It is often rounded up to 6 trillion miles in a year or that a light year equals a distance of 6 trillion miles.ven further away is the famous “light year,” the distance light travels in one year. I’ll repeat that just in case you have to re-look at the last line. A light year is the distance light travels in one year. That distance is 5,900,000,000,000 miles.
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What Is a Light-Year? Very big. To quantify the vastness of the cosmos, astronomers often refer to things being a certain number of light-years away. What does that really mean? Though seemingly contrary to how it sounds, a light-year is a measure of distance, rather than time. A light-year is the distance light travels in a year. Specifically, the International Astronomical Union defines a light-year as the distance light travels in 365.25 days. In a similar vein, you could describe 60 miles as a car-hour (the distance a car travels in an hour on a highway).
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What is a light-year? So light from a star at one end of our galaxy takes 20 times longer than all of recorded history to get to the other end. Astronomers measure the distance to the Andromeda galaxy using light-years. One light-year equals about 6 trillion miles. This galaxy is over 2 million light-years from Earth.