Question

Define Astronomical unit,light year and per sec,How are they related?​

Answer 1

One light year is almost six trillion miles. And an astronomical unit is the average distance between the earth and the sun. So the distance to the sun is by definition one AU. A parsec is the distance at which one astronomical unit subtends an angle of one second of arc. if it helps then plz mark as brainliest.

Answer 2

Answer:

Astronomical Unit (AU) = Average distance between the Sun and the Earth is called astronomical unit. ... Light year is used to measure distance between celestial objects. Parsec (pc): Distance at which average radius of earth. s orbit subtend angle of 1" (arc second) is called 1 parsec (pc).