Mark all below that apply to dark energy (the ones not checked apply to dark matter).多项选择题

A

Is continuously being created as time goes on

B

A particle that seems to only interact via the gravitational force

C

A source of extra gravity that keeps galaxies together

D

Is completely unlike any known fundamental particle

E

Was necessary for the formation of the first galaxies

F

Is causing the expansion of the universe to accelerate

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类似问题

What is the significance of dark energy in determining the age of the universe?

The Hubble's law  𝑣 = 𝐻 0 𝑑 imply that the expansion rate of the spacetime in the universe is uniform ( 𝐻 0 = 68 𝑘 𝑚 𝑠 ⋅ 𝑀 𝑝 𝑐 ). Does this seem true by looking at the supernova data?

What is dark energy?

Which of the following trees corresponds to a potential parse of the ambiguous sentence below, with correct syntactic categories? Some diagnostics are provided.

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