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    #1

    that is not accounted for by

    Does "that is not accounted for by" mean "in addition to"?

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    Dark matter is a hypothetical type of matter comprising approximately 27% of the mass and energy in the observable universe[1] that is not accounted for by dark energy, baryonic matter (ordinary matter), and neutrinos.[2] The name refers to the fact that it does not emit or interact with electromagnetic radiation, such as light, and is thus invisible to the entire electromagnetic spectrum.[3] Although dark matter has not been directly observed, its existence and properties are inferred from its gravitational effects such as the motions of visible matter, gravitational lensing, its influence on the universe's large-scale structure, and its effects in the cosmic microwave background. Dark matter is transparent to electromagnetic radiation and/or is so dense and small that it fails to absorb or emit enough radiation to be detectable with current imaging technology.

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  1. emsr2d2's Avatar
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    #2

    Re: that is not accounted for by

    No. It means that the dark matter is not made up of dark energy, baryonic matter or neutrinos. It must me made up of something else.
    Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.

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    #3

    Re: that is not accounted for by

    That is, that refers to a hypothetical type of matter?

  2. emsr2d2's Avatar
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    #4

    Re: that is not accounted for by

    Dark matter is something that is not accounted for by ...
    Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.

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