NASA’s James Webb supertelescope has set a new record by taking pictures of a universe that is just 2% of its current age and capturing the oldest galaxies ever known.
By researching James Webs data, an international research team identified The 4 galaxies existed when the universe was less than 400 million years old, located more than 13.4 billion light years from us.
When observing an object at such a distance, the number 13.4 billion light years corresponds to both the age of the object and the time it takes for light from that object to reach Earth . Therefore, what James Webb helps us to see is also ‘Time-traveling’ images from 13.4 billion years ago, when these galaxies were young. Perhaps they have perished or changed greatly in the present.
Close-up on the 4 oldest objects ever seen by humanity
Close-up of the 4 oldest objects ever seen by humanity – (Photo: NASA/ESA/CSA).
“It is important to prove that the galaxies recorded by James Webb actually resided in the early universe. It is possible that nearby galaxies ‘disguised’ themselves as very distant galaxies. Seeing the revealed spectra, we hope and have confirmed. Some are farther away than Hubble can see. This is an incredibly exciting achievement for the mission. – said astronomer Emma Curtis-Lake from the University of Hertfordshire (UK), co-author.
To capture this precious image, James Webb and the JADES mission team are targeting galaxies in ultra-deep space looked again at the area in and around the Hubble Ultra Deep Field.
Thanks to the sharper images obtained, galaxies that were too distant were gradually revealed. 250 faint galaxies were filtered to study and identify the oldest ones. Four dating back more than 13.4 billion years have been identified.
The region of the early universe that Hubble and James Webb explored together
The early universe that Hubble and James Webb explored together – (Photo: NASA/ESA/CSA)
According to co-author Brant Robertson of the University of California at Santa Cruz (United States), the oldest galaxy in the cluster could have appeared only 330 million years after the Big Bang which gave birth to the universe.
“It’s difficult to understand galaxies without understanding the early stages of their development. Just like humans, much of what happens later depends on these early generations. So many questions about galaxies await James Webb.” – explains co-author Sandro Tacchella, from the University of Cambridge (UK).
James Webb is the world’s most advanced supertelescope which was successfully deployed this year, manufactured and operated by NASA, in collaboration with the European and Canadian space agencies, ESSA and CSA.
Before James Webb, the throne “king” of the Hubble telescopes for more than three decades of operation, also operated by NASA, with the cooperation of ESA.
Article source: NLD
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NASA’s James Webb supertelescope has set a new record by taking pictures in a place where the universe is only 2% of its current age and capturing galaxies…