Stars that do not have what it takes to succeed as a star (i.e. do not have enough mass to fuse hydrogen into helium at their centers) are called:
A) extras
B) red giants
C) spectroscopic stars
D) brown dwarfs
E) main sequence stars

Question

Quizplus · Accepted Answer

Brown dwarfs are often referred to as failed stars or sub-stellar objects because they lack the mass to sustain hydrogen fusion reactions and therefore never reach the main sequence.

Stars That Do Not Have What It Takes to Succeed