What conditions lead you to see an absorption line spectrum from a cloud of gas in interstellar space?

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asked Sep 26, 2021 64.0k views

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Edef · Answer 1 · 2021-10-02T01:16:28+0000

Answer:

The cloud is cool and lies between you and a hot star.

Step-by-step explanation:

When there is a significant amount of cool interstellar matter between us and a star, we can see the absorption lines of the gas in the star's spectrum.

What conditions lead you to see an absorption line spectrum from a cloud of gas in interstellar space?

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