What do we mean by a protogalactic cloud?
A)a term once used historically to refer to any galaxy
B)the cloud- like halo that surrounds the disks of spiral galaxies
C)a cloud of gas that was once a galaxy
D)a cloud of hydrogen and helium that contracts to become a galaxy

Question

Quizplus · Accepted Answer

A protogalactic cloud is a cloud of hydrogen and helium that collapsed and began the process of forming a galaxy. It is the precursor to a galaxy and is made up of the raw materials that will eventually become stars, planets, and other objects in the galaxy.

What Do We Mean by a Protogalactic Cloud