what is light years
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1 light year is equal to how many years of the Earth? Light year is nothing but the distance that the light travels in one year. The value is very huge. That's why we use that as some reference to measure the distance particularly in space. The distance travelled by light in a year is 9 trillion km( accurately….9.461e+12). The distance between earth and moon is appr.
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1 light year is equal to how many years of the Earth? A light-year (abbreviation: ly), sometimes written light year, is a unit of length used informally to express astronomical distances. It is approximately 9 trillion kilometres (or about 6 trillion miles).
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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.
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- Assuming that 1 year is precisely 365 days, it is, 9454254955488 km. However, a year is more accurately 365 days, 5 hours, 48 minutes and 46 seconds. (31556926 seconds). Light goes at 299792458 m/s so 299792458 x 31556926 = 9460528412464108 m/y. There are 1000 m in a km, so 9460528412464108/1000 = 9460528412464.108 km. 9460528412464.107 kilometres is 1 light year. 9 467 280 000 000km. Assuming that 1 year is precisely 365 days, it is, 9454254955488 km. However, a year is more accurately 365 days, 5 hours, 48 minutes and 46 seconds. (31556926 seconds). Light goes at 299792458 m/s so 299792458 x 31556926 = 9460528412464108 m/y. 9460528412464.107 kilometres is 1 light year.
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Distance & Displacement For really large distances, the light year is the unit of choice. A light year is the distance light would travel in a vacuum after one year. It is equal to some nine quadrillion meters (six trillion miles). This unit is described in more detail in the next section.
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According to astronomers what is a light year it is a math question? 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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Why do astronomers use light years to measure distances in space? Astronomers use light years to measure distances in space because space is so massive and distances so far that conventional numbering is inadequate and unmanageable. One light year is a distance measurement equivalent to six trillion miles.
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StarChild Question of the Month for March 2000 What is a light-year. and how is it used? Answer: 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. Why would you want such a big unit of distance?
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What is a light-year? Hint: A light-year is a unit of distance, not time. A light-year is how astronomers measure distance in space. It’s defined by how far a beam of light travels in one year – a distance of six trillion miles. Think of it as the bigger, badder cousin of the inch, the mile, the kilometer, and the furlong.
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- It really is an incredibly long distance -- a lightyear is roughly 6 trillion miles or nearly 10 trillion kilometers. Here's how you calculate it. You start with the speed of light, which is about 186,000 miles per second. Then you multiply that by 3,600 seconds in an hour. Then you multiply that by 24 hours in a day. Then you multiply that by 365 days in a year.
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How many light years is Jupiter away from earth? A light-year is the distance travelled by light in one year, which is 9 trillion, 460 billion, 730 million, 472 thousand and 581 kilometres. In other words, almost 10,000 billion kilometres. First, it should be said that a light year is a measure of distance, not time (which I know is a little confusing from its name!). The minimum distance between Jupiter and Earth is 588 million km (365 million miles).
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What is a light year? so to measure really long distances people use a unit called a light year light travels at 186000 miles per second 300000 kilometers per second therefore a light second is 186000 miles 300000 kilometers
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What is a light year? ­So to measure really long distances, people use a unit called a light year. Light travels at 186,000 miles per second (300,000 kilometers per second). Therefore, a light second is 186,000 miles (300,000 kilometers).
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Convert gigaparsec to light years - Conversion of Measurement Units A light year, abbreviated ly, is the distance light travels in one year: roughly 9.46 × 1012 kilometres (9.46 petametres, or about 5.88 × 1012 (nearly six trillion) miles). More specifically, a light year is defined as the distance that a photon would travel, in free space and infinitely far away from any gravitational or magnetic fields, in one Julian year (365.25 days of 86400 seconds each).
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- by John Carl Villanueva on September 10, 2009. 1 light year is the distance light can travel in vacuum in one year’s time. This distance is equivalent to roughly 9,461,000,000,000 km or 5,878,000,000,000 miles. This is such a large distance. For comparison, consider the circumference of the Earth when measured at the equator: 40,075 km. This visible-light image shows the galaxy dubbed UGC 3789, which is 160 million light-years from Earth.
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1 light year is equal to how many years of the Earth? As stated earlier though, the year specified in light year is different to the year specified in Earth year. In fact, the year specified in a light year is actually 11 minutes and 31 seconds longer than an Earth year. So, the year in a light year is actually equal to 1.000022 Earth years - a difference of a whooping 0.0022%!
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- A unit of distance that would be traversed in a period of one year by an object moving at the speed of light in a vacuum (300,000,000 meters per second). One light year = 63,239.7 astronomical units = 0.3066 parsecs = 5.88 x 1012 miles. The nearest star system, Alpha Centauri, is 4.3 light years from ours.
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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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Light-year The light-year is most often used when expressing distances to stars and other distances on a galactic scale, especially in non-specialist and popular science publications.efinitions [edit]. As defined by the IAU, the light-year is the product of the Julian year (365.25 days as opposed to the 365.2425-day Gregorian year) and the speed of light (7008299792458000000♠299792458 m/s). Both these values are included in the IAU (1976) System of Astronomical Constants, used since 1984.
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1 light year is equal to how many years of the Earth? In fact, the year specified in a light year is actually 11 minutes and 31 seconds longer than an Earth year. So, the year in a light year is actually equal to 1.000022 Earth years - a difference of a whooping 0.0022%!
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According to astronomers what is a light year it is a math question? Rating Newest Oldest. Best Answer: A light year is the distance light travels in a year. I'm pretty sure light travels at the speed of 299,792,458 m/s. There are 60*60*24*365.256 or 31558118.4 seconds in the average year. So multiply that and light travels about 9.46 x 10^15 meters per year.ccording to anyone-not just astronomers-a light year is a light year. It's the distance light travels in a year.
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LIGHT-YEAR Meaning: The distance that light travels in a vacuum in 1 year; 5.88 trillion miles or 9.46 trillion kilometers. Classified under: Nouns denoting quantities and units of measure. Synonyms: light year; light-year. Hypernyms (light-year is a kind of...): astronomy unit (a linear unit used for astronomical distances) Meronyms (parts of light-year): light hour (the distance light travels in a vacuum in one hour; approximately one billion kilometers) light minute (the distance light travels in a vacuum in one minute; approximately 18 million kilometers)
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The Effects of Divorce on Children : A Selected Literature Review (1985) found that divorce had more adverse, long-term effects on boys than girls, they found that girls had more adverse effects as a result of remarriage of the custodial mother.
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How long would it take to travel 20 light years with our present technology? A light year is defined as the distance that light travels in one Earth year. Light moves extremely fast: 300,000 km/s or 180,000 miles/second. In one second light can travel around Earth almost four times. Nothing travels faster, establishing light as the ultimate speed limit.
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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 fast is a light year? Rating Newest Oldest. Best Answer: a light year is the distance light travels in a year. you should be asking how far not how fast. it's 9.4605284 × 10^15 meters, or 9.4 quadrillion meters. (average) distance earth to mars: 78341212000 m. light speed: 299792458 m / s. time to mars at light speed: 78341212000 m / 299792458 m / s = 261 s = ~4.5 minutes.