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30-06-2024, 04:05 PM
Earliest-known galaxy, spotted: Webb telescope, is a beacon to cosmic dawn. Zooming into watch.
An infrared image from NASA's James Webb Space Telescope, taken by NIRCam (Near-Infrared Camera) for the JWST Advanced Deep Extragalactic Survey, or JADES, program. One such galaxy, JADES-GS-z14-0 (shown in the pullout), was determined to have formed about 290 million years after Big Bang, making earliest-known galaxy. Reuters News.
NASA's James Webb Space Telescope has zoom spotted earliest-known galaxy, one surprisingly bright & considering it formed during universe's infancy - at only 2% its current age.
Webb, which by peering across vast cosmic distances is looking way back in time, observed galaxy as it existed about 290 million years after Big Bang event, initiated the universe roughly 13.8 billion years ago, researchers said. This period spanning universe's first few hundred million years is called cosmic dawn.
Telescope, it called JWST, has zooming revolutionized understanding early universe since becoming operational in 2022. New discovery was made by JWST Advanced Deep Extragalactic Survey (JADES) research team.
This galaxy, called JADES-GS-z14-0, measures about 1,700-light years across. A light year is the distance light travels in a year, 9.5 trillion km. It has a mass equivalent to 500 million stars the size of our sun & is rapidly forming new stars, about 20 every year.
Be4 Webb's observations, scientists did not know galaxies could exist so early, and certainly not luminous ones like this. The early universe has surprise after surprise for us," said astrophysicist Kevin Hainline of Steward Observatory University of Arizona, one of the leaders of study published online this week ahead of formal peer review.
"I think everyone's jaws dropped," added astrophysicist and study co-author Francesco D'Eugenio of the Kavli Institute for Cosmology at the University of Cambridge. "Webb is showing that galaxies in the early universe were much more luminous than we had anticipated."
Until now, earliest-known galaxy dated to about 320 million years after Big Bang, as announced by JADES team last year. It makes sense to call the galaxy big, b'cos it's significantly larger than other galaxies that JADES team has measured at these distances, & it's going to be challenging to understand just how something this large form in only a few hundred million years," Hainline said.
https://www.channelnewsasia.com/business...wn-4378526
An infrared image from NASA's James Webb Space Telescope, taken by NIRCam (Near-Infrared Camera) for the JWST Advanced Deep Extragalactic Survey, or JADES, program. One such galaxy, JADES-GS-z14-0 (shown in the pullout), was determined to have formed about 290 million years after Big Bang, making earliest-known galaxy. Reuters News.
NASA's James Webb Space Telescope has zoom spotted earliest-known galaxy, one surprisingly bright & considering it formed during universe's infancy - at only 2% its current age.
Webb, which by peering across vast cosmic distances is looking way back in time, observed galaxy as it existed about 290 million years after Big Bang event, initiated the universe roughly 13.8 billion years ago, researchers said. This period spanning universe's first few hundred million years is called cosmic dawn.
Telescope, it called JWST, has zooming revolutionized understanding early universe since becoming operational in 2022. New discovery was made by JWST Advanced Deep Extragalactic Survey (JADES) research team.
This galaxy, called JADES-GS-z14-0, measures about 1,700-light years across. A light year is the distance light travels in a year, 9.5 trillion km. It has a mass equivalent to 500 million stars the size of our sun & is rapidly forming new stars, about 20 every year.
Be4 Webb's observations, scientists did not know galaxies could exist so early, and certainly not luminous ones like this. The early universe has surprise after surprise for us," said astrophysicist Kevin Hainline of Steward Observatory University of Arizona, one of the leaders of study published online this week ahead of formal peer review.
"I think everyone's jaws dropped," added astrophysicist and study co-author Francesco D'Eugenio of the Kavli Institute for Cosmology at the University of Cambridge. "Webb is showing that galaxies in the early universe were much more luminous than we had anticipated."
Until now, earliest-known galaxy dated to about 320 million years after Big Bang, as announced by JADES team last year. It makes sense to call the galaxy big, b'cos it's significantly larger than other galaxies that JADES team has measured at these distances, & it's going to be challenging to understand just how something this large form in only a few hundred million years," Hainline said.
https://www.channelnewsasia.com/business...wn-4378526
