Astronomers Use the Term Interstellar Extinction to Refer To

question 35

Multiple Choice

Astronomers use the term interstellar extinction to refer to:

• A) the death of the dinosaurs and other species from the collision of an asteroid with the Earth
• B) the death of a massive star when it explodes
• C) the ionization of a region of hydrogen around an extremely hot star
• D) the absorption of radio waves at 21-cm by cold hydrogen atoms
• E) the scattering and absorption of starlight by dust grains in space

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Bluff

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