at a. it adds a negative term to the total energy of the Universe. b. it pervades the entire of the Universe, which is itself dark. c. it is concentrated in galaxies and galaxy clusters, but it is invisible. d. it is not detectable by any sort of light or other electromagnetic radiation. e. scientists are not sure what it is, so they use the term dark energy as a way to emphasize their ignorance.
at a. it adds a negative term to the total energy of the Universe. b. it pervades the entire of the Universe, which is itself dark. c. it is concentrated in galaxies and galaxy clusters, but it is invisible. d. it is not detectable by any sort of light or other electromagnetic radiation. e. scientists are not sure what it is, so they use the term dark energy as a way to emphasize their ignorance.
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The name dark energy refers to the fact that
a.
it adds a negative term to the total energy of the Universe.
b.
it pervades the entire of the Universe, which is itself dark.
c.
it is concentrated in galaxies and galaxy clusters, but it is invisible.
d.
it is not detectable by any sort of light or other electromagnetic radiation.
e.
scientists are not sure what it is, so they use the term dark energy as a way to emphasize their ignorance.
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