Which of the following happens when a low-mass star runs out of fuel? Choose all that apply.
A. Its core becomes a white dwarf
B. Its outer layers form a nebula, or vast cloud of gas and dust
C. its outer layers expand, and the star becomes a red giant
D. gas and dust in a nebula contract to form a protostar
A
B
C?
2 answers
Correct.
Yes, those are the correct answers.