Question

What are intergalactic gases?​

Answer 1

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Intergalactic gas is so tenuous that it emits no light of its own. ... Instead astronomers study it indirectly by observing how it selectively absorbs the light coming from faraway sources known as quasars.

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Answer 2

Step-by-step explanation:

Intergalactic medium, material found between galaxies and that mostly consists of hot, tenuous hydrogen gas. At one time it was thought that large amounts of mass might exist in the form of gas clouds in the spaces between galaxies.