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First results from the Dark Energy Spectroscopic Instrument (DESI) have been released, helping build a picture of the universe over 11 billion years.
Astronomers have made the largest 3-D map of our universe and it could change the way we understand dark energy's role in the cosmos.
Scientists thought dark energy was constant. This groundbreaking study suggests otherwise.
Universe started expanding after the Big Bang, 13.8 billion years ago
For more than a century, scientists have known that the universe started expanding after the Big Bang, 13.8 billion years ago.