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killian killian
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10 years ago
Why do we call dark matter "dark"?
A) It emits no visible light.
B) We cannot detect the type of radiation that it emits.
C) It emits no or very little radiation of any wavelength.
D) It blocks out the light of stars in a galaxy.
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padrepadre
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9 years ago
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killian Author
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9 years ago
Thank you sir
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