Question

Why is a parsec named so?

Answer 1

So the finger's location, relative to stuff in the background, looks different. This apparent shift is called parallax, from a Greek word meaning alternation. ... One parsec is the distance to an object whose parallax angle is one arcsecond

Answer 2

Hola!!

So the finger's location, relative to stuff in the background, looks different. This apparent shift is called parallax, from a Greek word meaning alternation. ... One parsec is the distance to an object whose parallax angle is one arcsecond