The most common form of gas in the disk of the Milky Way Galaxy is
A)molecular hydrogen.
B)gas in hot bubbles.
C)atomic hydrogen gas.
D)gas in stellar winds.

Question

Quizplus · Accepted Answer

Atomic hydrogen gas is the most common form of gas in the disk of the Milky Way Galaxy, as it makes up more than 99% of the interstellar gas by mass. While molecular hydrogen is present, it is more difficult to detect and is estimated to make up only around 1% of the total gas mass. Gas in hot bubbles and gas in stellar winds are not as abundant as atomic hydrogen gas in the disk of the Milky Way.

The Most Common Form of Gas in the Disk of the Milky