How Bright Are Stars and How Many Different Ways Can Astronomers Determine a Star’s Brightness?

There are three ways to talk about a star’s brightness.

We can discuss the apparent magnitude of a star, or how bright it appears when we look at it.

We know, however, that stars nearer the earth appear brighter than faraway stars, even though they may not actually be brighter.

how bright are stars and how many different ways can astronomers determine a stars brightness scaled

So, astronomers also talk about the absolute magnitude of stars, or the brightness of a star if the observer were 10 parsecs from it.

The third way to measure a star’s brightness is called luminosity.

Luminosity is a measure of how much energy a star puts out in comparison to our Sun.

About Karen Hill

Karen Hill is a freelance writer, editor, and columnist for zippyfacts.com. Born in New York, she loves interesting random facts from all over the world.