Brown dwarfs are ____.
A) stars with a very thick dust sphere around them, so they appear "brown"
B) low mass M type stars with hundreds of planets
C) an anomaly because they are extremely small but have relatively high temperature
D) protostars that could not ignite the fusion of hydrogen at their core
E) has a surface temperature of 2500 K by fusing hydrogen

Question

Quizplus · Accepted Answer

Brown dwarfs are objects that are too massive to be considered planets but not massive enough to sustain the nuclear fusion of hydrogen in their cores, which is necessary for a star to shine. This makes them "failed stars" or protostars that could not ignite sustained hydrogen fusion.

Brown Dwarfs Are ____