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

Question

Quizplus · Accepted Answer

A protogalactic cloud refers specifically to a cloud of hydrogen and helium that contracts under gravitational forces to eventually form a galaxy. This process is thought to have occurred in the early universe, leading to the formation of the first galaxies.

What Do We Mean by a Protogalactic Cloud