Question

what is parsec?
what are its uses?
what is the difference between light year and parsec?​

Answer 1

A parsec is a unit of distance used in astronomy. It is the distance that light travels in 3.26 years, or just under 31 trillion kilometres (about 19 trillion miles). This is from the definition: a parsec is the distance from the Sun to an object which has a parallax angle of one arcsecond.

Answer 2

Answer:

1. A parsec is a unit of distance used in astronomy. It is the distance that light travels in 3.26 years, or just under 31 trillion kilometres (about 19 trillion miles). This is from the definition: a parsec is the distance from the Sun to an object which has a parallax angle of one arcsecond

It's the largest unit of distance. To measure distance of astronomical objects, astronomers usually measure the parallax angle. The parsec can be used readily with that data. So it makes calculations easy

2)A parsec is equivalent to 3.26 light years, and since a light year is the distance light travels in 1 year 9.4 trillion km, 1 parsec equals 30.8 trillion km. The term parsec is a combination of 2 words, parallax (par) and arc second (sec).Nov 14, 2013

Explanation: