AhaBulbStuff Everyone Should Know
AhaBulb: Stuff Everyone Should Know · ahabulb.com/astro-brown-dwarf-mass-limit

Below about what mass can an object never get hot enough to fuse ordinary hydrogen?

Start playing free

  1. About 0.075 solar masses
  2. About 1.4 solar masses
  3. About 3 solar masses

🔒 The answer is for AhaBulb members. Members see the answer, why it's right and the official sources for every card of Stuff Every Astronomer Should Know, plus timed practice exams.

The first 50 cards of every test are free to play.

Play the free cards See membership

Like this card?
Play the game

References

  1. Astronomy 2e, 17.3 The Spectra of Stars (and Brown Dwarfs) openstax.org/books/astronomy-2e/pages/17-3-the-spectra-of-stars-and-brown-dwarfs Checked 2026-10-12.

Think this answer is wrong? Tap "Challenge this answer" on the card in the game and tell us why.

Test yourself in the game

Astronomy & SpaceWhat balance keeps a stable star like the Sun from collapsing or flying apart?Astronomy & SpaceWhat does a star's color mainly tell you?Astronomy & SpaceWhat is the order of the main stellar spectral classes from hottest to coolest?

That's stuff everyone should know.