The universe is expanding faster than it used to, meaning it's about a billion years younger than we thought, a new study by a Nobel Prize winner says.
The universe is expanding faster than it used to, meaning it's about a billion years younger than we thought, a new study by a Nobel Prize winner says. And that's sending a shudder through the world of physics, making astronomers re-think some of its most basic concepts.
They find the conflict so confounding that they are talking about coming up with"new physics," incorporating perhaps some yet-to-be-discovered particle or other cosmic"fudge factors" like dark energy or dark matter. Even with the discovery, life continues on Earth the way it always has. But to astrophysicists trying to get a handle on our place in this expanding universe, this is a cosmic concern.To come up with his measurement of the Hubble constant, Riess looked to some not-so-distant stars.
The Planck team studied background radiation from a time just 370,000 years after the Big Bang. By examining cold and hot spots in that radiation, scientists figured out how big the spots were, which helped them determine how far away they were looking. Both calculations make sense and"nobody can find anything wrong at this point," said distinguished University of Chicago astrophysicist Wendy Freedman. Other outside experts praised both teams' research.
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