A main-sequence star is unique because:
A) hydrostatic equilibrium exists at all radii
B) energy transport occurs via convection throughout much of its interior
C) carbon burning occurs in its core
D) it emits strong surface winds
E) hydrogen burning occurs in its core

Question

Quizplus · Accepted Answer

A main-sequence star is defined as a star that is burning hydrogen in its core. This is what sets it apart from other types of stars, such as red giants or white dwarfs. The other options listed are not necessarily unique to main-sequence stars, although some main-sequence stars may exhibit those characteristics.

A Main-Sequence Star Is Unique Because