Prestellar objects in which nuclear fusion never starts are referred to as?

Prestellar objects in which nuclear fusion never starts are referred to as
a) globules.
b) brown dwarfs.
c) protostars.
d) terrestrial planets
I was thinking brown dwarf, but isn’t that substellar?

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3 Responses to “Prestellar objects in which nuclear fusion never starts are referred to as?”

  1. Richard M said:

    I was going to say “Rocks.”

  2. No Picture Available said:

    Brown dwarfs…

  3. BroHymn said:

    Brown dwarfs aren’t massive enough to reach temperatures high enough to begin hydrogen fusion. So if the question suggests that the object doesn’t, and never will reach hydrogen fusion, then the answer is brown dwarf. Brown dwarfs use lithium for energy.

    Protostars are prestellar objects that haven’t yet begun hydrogen fusion. Protostars will condense and begin hydrogen fusion.




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