bsorption lines produced by interstellar gas a. are wider than the lines from stars because the gas is hotter than most stars. b. are more narrow than the lines from stars because the gas has a lower pressure than stars. c. indicate that the interstellar medium contains dust. d. indicate that the interstellar medium is expanding away from the sun. e. indicate nothing; none of the above statements are true.
bsorption lines produced by interstellar gas a. are wider than the lines from stars because the gas is hotter than most stars. b. are more narrow than the lines from stars because the gas has a lower pressure than stars. c. indicate that the interstellar medium contains dust. d. indicate that the interstellar medium is expanding away from the sun. e. indicate nothing; none of the above statements are true.
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Absorption lines produced by interstellar gas
| a. |
are wider than the lines from stars because the gas is hotter than most stars.
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| b. |
are more narrow than the lines from stars because the gas has a lower pressure than stars.
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| c. |
indicate that the interstellar medium contains dust.
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| d. |
indicate that the interstellar medium is expanding away from the sun.
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| e. |
indicate nothing; none of the above statements are true.
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