Question

select the correct answer.
what is the name for a star that has too low of a mass to start hydrogen fusion?
a. white dwarf
b. black dwarf
c. red dwarf
d. brown dwarf

Explanation:

• A white dwarf is the remnant of a low - mass star that has exhausted its nuclear fuel. It has already gone through nuclear fusion stages.
• A black dwarf is a theoretical object that would be the end - stage of a white dwarf after it has cooled down completely.
• A red dwarf is a small, cool, main - sequence star that is undergoing hydrogen fusion (though at a very slow rate due to its low mass).
• A brown dwarf has a mass too low to sustain hydrogen fusion in its core.

Answer:

D. brown dwarf