New theory about spinning universe could be the answer to "Hubble tension"
April 25, 2025
By Evrim Yazgin
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The Whirlpool Galaxy, M51, is a spiral galaxy located 31 million light-years away. Credit: NASA.
The universe has been growing since the Big Bang 13.8 billion years ago. But cosmologists can’t agree on how fast it is expanding.
A new study published in Monthly Notices of the Royal Astronomical Society suggests a radical new idea that might resolve this astronomical problem – perhaps the universe is spinning very slowly.
For decades, physicists using different observational methods have found 2 different answers for how fast the universe is expanding.
One method looks at distant exploding stars or supernovae to measure the distance between galaxies. This approach gives the universe’s expansion over the past few billion years. The other method uses radiation from the Big Bang to give the expansion rate of the very early universe.
Each value is different. This disagreement is known as the “Hubble tension” – referring to the Hubble constant which defines the rate of the universe’s expansion.
More:
https://cosmosmagazine.com/space/astrophysics/spinning-universe-hubble-tension/
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