Our sun is in which phase of its life? Nuclear fusion will burn all of the hydrogen in its core and then it will begin its next phase of life. Astronomers estimate this will be when?

Question

*1 point

Main Sequence; 5 billion years

Protostar; 5 billion years

Main Sequence; 2 billion years

Red Giant; 5 billion years

Answer 1

The correct answer is Main Sequence; 5 billion years.