Question

What is the first phase of a star’s lifecycle?

Answer 1

Answer:

it's called a protostar.

Explanation:

Answer 2

Answer:

Protostar

Explanation:

In this change, two atoms of hydrogen gas combine to form an atom of helium gas. The gas in the nebula begins to glow. This is the first step in the life cycle of a star. It is called a protostar.