Question

Define par- sec and light year?​

Answer 1

Answer:

One parsec is approximately equal to 31 trillion kilometres (19 trillion miles), or 210,000 astronomical units, and equates to about 3.3 light-years.

Astronomical units: 2.06265×105 au; 3.26156 ly

Unit system: astronomical units

Unit of: length/distance

Imperial & US units: 1.9174×1013 mi

Explanation:

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Answer 2

light year

a unit of astronomical distance equivalent to the distance that light travels in one year, which is 9.4607 × 1012 km (nearly 6 million million miles).

a long distance or great amount.

a long distance or great amount."the new range puts them light years ahead of the competition"

par sac

One parsec is defined as the distance to a star that shifts by one arcsecond from one side of Earth's orbit to the other. One parsec is about 30 trillion kilometers, or just over three light-years