The calculation of 1 Parsec

Question

I don’t understand it enough to explain it, actually I don’t really understand it myself at all

In: Physics

Answer 1

One parsec is the distance from which a scientist measuring the distance from the Sun to the Earth would measure an angle of one second of arc (1/3600^th of a degree).

This works out to about 3.26 light years (3.086 × 10^13 kilometers). The distance from the Earth to the Sun is pretty large, and one second of arc is a very, very small angle.