The new astronomy is based on gravitational waves, rather than lights and telescopes, and it enables scientists to observe events in our universe that otherwise would be forever buried in darkness. | Royal Institution of Great Britain

NASA Space Telescopes Spot an Early Universe Surprise: A Mature Galaxy Cluster FriendsofNASA.org: A new discovery captures the cosmic moment when a galaxy cluster—among the largest structures in the universe—started to assemble only about a billion years after the big bang, one or two billion years earlier than previously thought. This result, made using NASA’s Chandra X-ray Observatory and James Webb Space Telescope, will force astronomers to rethink when and how the first galaxy cluster in the