Astronomers using the Dark Energy Spectroscopic Instrument (DESI), a state-of-the-art instrument mounted on NSF’s Nicholas U. Mayall 4-m telescope at Kitt Peak National Observatory, have mapped how nearly 6 million galaxies cluster across 11 billion years of cosmic history. Their results provide one of the most stringent tests yet of Albert Einstein’s general theory of relativity. This artist’s impression shows the evolution of the Universe...
