Question

Into which of the following life cycle stages will the sun enter next?
a. white dwarf stage
b. red giant stage
c. planetary nebula stage
d. black dwarf stage

Answer 1

b) red giant stage

At this stage it will become so big that Earth will be destroyed :(

Answer 2

Answer:

b. red giant stage

Explanation:

Sun is a medium sized yellow star. It was born in solar nebula 4.5 billion years ago and moved into main sequence. Currently, sun is a main sequence star and has a lifetime of about 5 more billion years. Once the fuel runs out, the sun would expand to form a red giant and throw out majority of its mass. At the end, the core would form a white dwarf.

Thus, the next stage in the life cycle of a star is the red-giant stage.