It is about a billion times brighter.
What is the brightness of a star called?
- A star's apparent magnitude, or how bright it seems to be from Earth, and absolute magnitude, or how brilliant it looks at a standard distance of 32.6 light-years, or 10 parsecs, are words used by astronomers to describe stellar brightness.
How bright are planets compared to stars?
- Although planets and stars light up the night sky, planets usually appear much brighter than most stars.
- Astronomers use astronomical scales to measure the relative brightness of celestial bodies, and many planets fall within the range easily visible to the eye.
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