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        NASA | Cosmic Origin Spectrograph

        The Cosmic Origin Spectrograph (COS), installed on the Hubble Space Telescope in 2009, allows scientists to use spectrographic analysis to assess the composition of intergalactic material. By collecting and analyzing light passing through intergalactic space, COS reveals which elements are present and their relative abundance. Scientists use this information to enhance our understanding of large-scale cosmic structure and also to glean insights about the universe’s past.

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