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Astronomers recently discovered brown dwarfs of only a few hundred degrees fahrenheit, which seems about the same temperature as some planets. So what is the difference between a brown dwarf and a planet? | Astronomy.com
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  • Astronomers recently discovered brown dwarfs of only a few hundred degrees fahrenheit, which seems about the same temperature as some planets. So what is the difference between a brown dwarf and a planet?
FROM THE April 2014 ISSUE

Astronomers recently discovered brown dwarfs of only a few hundred degrees fahrenheit, which seems about the same temperature as some planets. So what is the difference between a brown dwarf and a planet?

Ewell Schirmer, Plano, Texas
Published: Monday, February 24, 2014
RELATED TOPICS: BROWN DWARFS
Astronomers recently found brown dwarfs with surface temperatures of a few hundred degrees Fahrenheit.

This is an excellent question, and it’s one that even astronomers have a hard time agreeing on. There are three criteria that we consider when trying to distinguish among stars, giant planets, and brown dwarfs: how they formed, how massive they are, and what they look like.

Astronomy magazine subscribers can read the full answer for free. Just make sure you're registered with the website.

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