The JamesWebb Space Telescope has discovered two of the earliest galaxies ever seen in the universe, and they are much brighter than expected.
The James Webb Space Telescope has discovered two of the earliest galaxies ever seen in the universe, and they are much brighter than expected, meaning astronomers are rethinking their beliefs about how the earliest stars formed.
The two galaxies are thought to be billions of years old, from just 100 million years after the Big Bang. Webb is able to look back at some of the earliest galaxies, because it operates in the infrared range, meaning it can see galaxies that are redshifted. Webb also takes advantage of a phenomenon called gravitational lensing, in which a massive object like a galaxy or galaxy cluster has so much mass that it warps space and acts like a magnifying glass, allowing researchers to see even more distant galaxies behind it.
“We’ve nailed something that is incredibly fascinating. These galaxies would have had to have started coming together maybe just 100 million years after the Big Bang. Nobody expected that the dark ages would have ended so early,” said another of the researchers, Garth Illingworth. “The primal Universe would have been just one hundredth of its current age. It’s a sliver of time in the 13.8-billion-year-old evolving cosmos.
Norge Siste Nytt, Norge Overskrifter
Similar News:Du kan også lese nyheter som ligner på denne som vi har samlet inn fra andre nyhetskilder.
James Webb telescope first images of our galaxy's evolution are unlike anything we've seen beforeNASA has revealed James Webb first full color images, showcasing parts of the universe in the most detailed images we've ever captured.
Les mer »
It's official: NASA won't rename James Webb Space TelescopeThe agency has cleared former NASA chief James Webb of persecuting LGBTQ+ staffers.
Les mer »
NASA once again declines to rename the James Webb Space TelescopeNASA says an extensive review of historical records found no evidence that Webb ever led or supported purges of government employees who were gay. But some astronomers think that's a pretty low bar.
Les mer »
NASA once again declines to rename the James Webb Space TelescopeNASA says an extensive review of historical records found no evidence that Webb ever led or supported purges of government employees who were gay. But some astronomers think that's a pretty low bar.
Les mer »
NASA still won't rename the James Webb Space Telescope, citing new investigation into namesake's career | CNNOfficials at NASA have released their investigation into the space telescope's namesake, the late NASA Administrator James Webb. There is no evidence linking Webb to discriminatory firings during the Lavender Scare of the 1950s, the investigation concluded.
Les mer »
James Webb Space Telescope reveals two of the oldest and most distant galaxies ever seenNASA's James Webb Space Telescope has captured two of the most distant galaxies, including one that may have formed just 350m years after the big bang.
Les mer »