Question

question 8 (1 point)
use your hr diagram to predict what polaris will do next?
a become a nebula
b become a main sequence star
c become a blue giant
d become a white dwarf

Explanation:

Polaris is a Cepheid variable star, currently in a later stage of stellar evolution. After a star like Polaris (a supergiant - related type in its lifecycle) exhausts its nuclear fuel, it will shed its outer layers (forming a nebula - like structure eventually) and the core will evolve. But more precisely, Polaris (a yellow supergiant now) will eventually shed its outer layers, and the core will become a white dwarf. Main sequence is its past stage, blue giant is not its next path, and becoming a nebula is the process of shedding outer layers (but the final remnant core evolution: white dwarf). So the correct option is d.

Answer:

d. Become a white dwarf