Dark Energy Spectroscopic Instrument (DESI)

The Dark Energy Spectroscopic Instrument (DESI) is a powerful astronomical tool hosted at the Mayall 4-meter telescope in Arizona’s Kitt Peak National Observatory in United States. It is designed to measure the effects of dark energy on the expansion of the universe by obtaining optical spectra from tens of millions of galaxies and quasars, thus creating the largest 3D map of the universe to date. DESI operates under the guidance of key figures like Michael Levi and involves a complex setup including 5000 fiber-positioning robots and a series of spectrographs. Recent milestones include the release of an early data set in June 2023, which has already enhanced our understanding of the universe’s expansion with remarkable precision.

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