Question

What is light year? Write it's value in meter.​

Answer 1

Explanation:

Both of these values are included in the IAU (1976) System of Astronomical Constants, used since 1984. From this, the following conversions can be derived.

1 light-year = 9460730472580800 metres (exactly)

≈ 9.461 trillion kilometres (5.879 trillion miles)

≈ 63241.077 astronomical units

≈ 0.306601 parsecs

1 more row

Answer 2

$\huge\tt\red{Answer}$

• The light-year is a unit of length used to express astronomical distances and is equivalent to about 9.46 trillion kilometres or 5.88 trillion miles. As defined by the International Astronomical Union, a light-year is the distance that light travels in vacuum in one Julian year.

• 1 light year = 9.461×10^15 metres