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What is a light year in km and in AU?

Updated: 8/20/2019
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11y ago

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1 light year = 9,460,730,472,580.8 km or 63,239.7263 Astronomical Units (AU).

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Q: What is a light year in km and in AU?
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Related questions

Is an AU larger than a light year?

No. A light year is about 63,000 AU.


How do you measure distance in space?

km, AU (1.5 x 10^8 km), Light year (9.5 x 10 ^ 12 km), Parsec (smallest to largest)


Put Ly PC AU Km in order from least to greatest?

Kilometre, Astronomical Unit, Light Year, Parsec.


One light-year is about?

One light year is equal to: 0.307 pc (parsecs) 63241 AU 9.461×1012 km 9.461×1015 meters 5.879×1012 miles


Is a light year is much smaller than an AU?

No. A light year is much larger than an AU, roughly 63,000 AU.


Which is longer a light year or an astronomical unit?

A light year is much bigger, an AU is only about 8 light minutes.1 light year = 63,240 AU


Is a light year 150 million km?

No. 150 million km is the distance from Earth to Sun, and this distance is called an AU (astronomical unit). Light travels this distance in about 8 minutes.A light-year is the distance traveled by light in a year, which of course is much more than the distance traveled in 8 minutes. A light-year is approximately 9.461 x 10 to the power 12 km.


Why do astronauts measure distance in light years?

Actually, "astronauts" usually don't. They measure distances mostly in km. The furthest from Earth any astronaut has ever been is about 400,000 km, which is still a manageable number in km. Astronomers don't either, for the most part; they tend to use either AU (for in-system distances) or parsecs for interstellar distances. When light-years are used, it's generally because the distances involved are too large for km or AU. 1 light year is about 9,500,000,000,000 km, so you can see how much of a difference that makes. 1 light year is only about 63,200 AU, but that still adds up pretty quickly.


How many astronomical units are in a light hour?

1 light-hour = 7.2 AU (rounded) 1 light-hour is approximately 1.08×109 km, while 1 AU is approximately 1.5 x 108 km (149,597,870,700 m).


How many kilometers is 9 astronomical units?

9 AU = 1,346,380,843 km.9 AU = 1,346,380,843 km.9 AU = 1,346,380,843 km.9 AU = 1,346,380,843 km.


What is the order of increasing length of astronomical unit parsec kilometer and light year?

kilometer, AU (astronomical unit), light year, parsec.


How many AU's in one light-year?

1 light-year is about 63,240 AUs.