- Astronomers across the world announced on Thursday that they have found the first evidence of a long-theorised form of gravitational waves that create a “background hum” rumbling throughout the universe.
- The breakthrough — made by hundreds of scientists using radio telescopes in North America, Europe, China, India and Australia after years of work — was hailed as a major milestone that opens a new window into the universe.
- First predicted by Albert Einstein more than a century ago, gravitational waves are ripples in the fabric of the universe that travel through everything at the speed of light almost entirely unimpeded.
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Astronomers Reveal Evidence Of Universe’s ‘Background Hum’
This image made available by the Space Telescope Science Institute on Thursday, Nov. 17, 2022, shows two of the farthest galaxies seen to date captured by the James Webb Space Telescope in the outer regions of the giant galaxy cluster Abell 2744. The galaxies are not inside the cluster, but many billions of light-years farther behind it. The galaxy labeled "1" existed only 450 million years after the big bang. The galaxy labeled "2" existed 350 million years after the big bang. (NASA, ESA, CSA, Tommaso Treu (UCLA), Zolt G. Levay (STScI) via AP)
