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Hace 3 días · The spherical volume of space which will become the observable universe is 42 million light-years in radius at this time. The baryonic matter density at this time is about 500 million hydrogen and helium atoms per m 3, approximately a billion times higher than today. This density corresponds to pressure on the order of 10 −17 atm. Dark Ages
Hace 4 días · Using Webb’s NIRSpec (Near-Infrared Spectrograph), they obtained a spectrum of a record-breaking galaxy observed only two hundred and ninety million years after the big bang. This corresponds to a redshift of about 14, which is a measure of how much a galaxy’s light is stretched by the expansion of the universe.
Hace 4 días · published 30 May 2024. The James Webb Space Telescope has detected the two earliest, most distant galaxies in the known universe, dating to just 300 million years after the Big Bang. The...
Hace 4 días · An international team of astronomers today announced the discovery using NASA’s James Webb Space Telescope (JWST) of the two earliest and most distant galaxies yet confirmed, dating back to only 300 million years after the Big Bang.
Hace 4 días · James Webb Space Telescope has spotted the two earliest and most distant galaxies ever seen. One, JADES-GS-z14-0, is a massive and bright galaxy that existed just 300 million years after the Big...
Hace 4 días · May 30, 2024. Jeremy Gray. The James Webb Space Telescope (JWST) has been busy peering into the distant reaches of the Universe, otherwise known as the “Cosmic Dawn.” This period when the...
Hace 4 días · The previous record holder, JADES-GS-z13-0, was discovered in 2022 with a redshift of 13.2, placing it about 330 million years after the Big Bang and roughly 13 billion light years from Earth.
