precisely how many miles is a light year
bf5095fb982e95c8b15c13acc6231fa6
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.
f02fa67a7b3642d5b4bf54cb1c1178f4
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).
9cc3101f237d802c369cf267df30e420
What is a light-year? 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. Image credit: Adam Evans via Wikipedia
7650d5638627c1a10140b9ecca4a79c4
- Quite by coincidence, the number of astronomical units in one light-year and the number of inches in one mile are virtually the same. For general reference, there are 63,000 astronomical units in one light-year, and 63,000 inches in one mile. This wonderful coincidence enables us to bring the light-year down to Earth.
f3d7753ebf805bd9db37334abc2d2b4a
- Multiply the number of seconds in one year by the number of kilometers (or miles) that light travels in one second, and there you have it: one light-year. It’s about 9.5 trillion kilometers (5.88 trillion miles).
ee936955c6aa127dc8ae617ebc2cfd3c
Light-year A light-year is equal to 9,460,730,472,580.8 km (about 9.461 Pm; 5,878,625,373,183.61 statute miles; about 63,240 astronomical units or about 0.3066 parsecs. The exact length of the light-year depends on the length of the reference year used in the calculation, and there is no wide consensus on the reference to be used.
085c2573c48c9e6d8b4f39a830b5a048
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). A light year is the distance that light can travel in a year, or: 186,000 miles/second * 60 seconds/minute * 60 minutes/hour * 24 hours/day * 365 days/year = 5,865,696,000,000 miles/year A light year is 5,865,696,000,000 miles (9,460,800,000,000 kilometers).
4bc42b7cccbba4b5dfe6afc2c79eb460
- But how far exactly is a light-year? Light travels 186,000 miles per second. There are 60 seconds in a minute, 60 minutes in an hour, 24 hours in a day, and 365 days in a year. Multiply these together to get 31,500,000 seconds in a year.
53068721fed03ee7dddc90f62b52a62a
Convert Light Years to Miles Light Years. A light year is the distance that light travels in one year. The year used by the International Astronomical Union is 365.25 days. Therefore a light year is exactly 9,460,730,472,580.8 kilometers. A mile is a unit of distance equal to 1.609344 kilometers.
2f87e3d10edf8dd4b5a6f9ad42a63ff6
- 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.
ce58e33ccb634576205307fd0c4ef7df
- A good approximation would be: 1 light-year = 63240 AU (astronomical units) Just for information, 1 light-year is equivalent to the distance travelled by light in 1 year moving in a vacuum. 1 light-year is about 9.4607 * 1015 metres. 1 astronomical unit (AU) is equivalent to the average radius of the Earth's orbit. 1 AU is about 1.4960 * 1011 metres.
0074ec08b2fbe71fb904e8b6096c3e86
What is a light-year? Traveling at a speed where you cross nearly 200,000 miles every second for eight full minutes would only get you to the center of our solar system. A light beam needs only 8 minutes to travel the 93 million miles (150 million kilometers) from the sun to the Earth.
8819ba1cea098ff3907b449a25063de8
JUST THE FACTS Most objects in space are so far away, that using a relatively small unit of distance, such as an astronomical unit, is not practical. Instead, astronomers measure distances to objects which are outside our solar system in light-years. A light-year (ly) is the distance that light can travel in one year in a vacuum (empty space). The speed of light is about 186,000 miles or 300,000 kilometers per second.
03fcede0fda1f835292fa1d7547e4126
Light-year 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). As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in a vacuum in one Julian year.
ea0203df2588ec6d998242bc0b0ec224
- 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.
c02a93fc626ffab3bf3b1dac531a6c0b
Convert light years to meters The Light Year is the distance that the light travels in one year, which is 9,460,528,405,000 kilometers. The Meter is the basic metric unit of length, which equals 1.094 yards. Please enter light years value in the first input field, and you'll see the result value in meters in the second field.
76bad299454071d72b9406176831bcc6
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.o 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.
9324477aae61aa6d2723b94cc76b6623
1 light year is equal to how many years of the Earth? The light-year is a unit of length used to express astronomical distances. It is about 9.5 trillion kilometres or 5.9 trillion miles. As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in vacuum in one Julian year (365.25 days). Because it includes the word year, the term light-year is sometimes misinterpreted as a unit of time.
f4a7b98e41da29742a59566bc5874268
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.ell, it is quite convenient to measure the distances in space using light year. To take just one example, the distance to the next nearest big galaxy, the Andromeda Galaxy, from earth is 21,000,000,000,000,000,000 km.
651040e110657615745643643cb65533
- in any case it s clear a light year is a vast expanse over a year light travels 5 87849981 x 10 12 miles roughly 9 4605284 x 10 12 kilometers written out that s 5878499810000 miles or 9460528400000 kilometers
7c21d865a59d5bb091db22da126d2939
What is a light-year? One Astronomical Unit, or AU, equals about 93 million miles (150 million km). Another way of looking at it: the Astronomical Unit is a bit more than 8 light-minutes in distance. A light beam takes 8 minutes to travel the 93 million miles (150 million km) from the sun to the Earth. Image via Brews OHare on Wikimedia Commons.
207f3e0a9cb299c9b496a904f42294f7
- So light travels 5,869,713,600,000 miles in a year  In four years it would travel 23,478,854,400,000 miles.   It would take the Space shuttle traveling an average of 18,000 mph 1,304,380,800 hours to reach that distance, which is 54,349,200 days or 148,800 years. 2 people found this useful. 4 Jays.
7abc77cd190b98f1e03e50b7c4d16404
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.
af6716ebe3df4ce126f7ef04794ab8ec
Atom A light beam takes 8 minutes to travel the 93 million miles (150 million km) from the sun to the Earth. Image via Brews OHare on Wikimedia Commons. Robert Burnham noticed that, quite by coincidence, the number of astronomical units in one light-year and the number of inches in one mile are virtually the same.
e26223abe8ca1fa92b7797f63a0da117
- ­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). A light year is the distance that light can travel in a year, or: 186,000 miles/second * 60 seconds/minute * 60 minutes/hour * 24 hours/day * 365 days/year = 5,865,696,000,000 miles/year. A light year is 5,865,696,000,000 miles (9,460,800,000,000 kilometers).
063a1d3d569d9a5a66344fa2066a9156
Convert light year to miles - Conversion of Measurement Units You can view more details on each measurement unit: light year or miles. The SI base unit for length is the metre. 1 metre is equal to 1.05700083402E-16 light year, or 0.000621371192237 miles. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between light years and miles. Type in your own numbers in the form to convert the units!