On July 12, NASA presented a photo of the universe taken by its James Webb Space Telescope.
The US space agency described the snapshot as "the deepest, sharpest infrared image of the distant Universe to date".
James Webb's photo depicts the SMACS 0723 cluster, which groups thousands of galaxies, as it looked 4.6 billion years ago,
Numerama
reports .
Light from these galaxies took billions of years to reach the telescope, showing what this part of the universe looked like a billion years after the Big Bang.
But, although fascinating, this photo is not the deepest ever obtained.
📢 The moment we have been waiting for is here.
#Webb delivers deepest infrared image of Universe yet in special briefing.
Known as Webb's First Deep Field, this image features the galaxy cluster SMACS 0723, which is overflowing with detail https://t.co/CXoSpDqTLB 👇 pic.twitter.com/3f5Bk6Z7e2
— ESA Webb Telescope (@ESA_Webb) July 11, 2022
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An image of the cosmic radiation
“We see even older things on this image of the Planck satellite”, recently assured Eric Lagadec, astrophysicist at the Observatory of the Côte d'Azur, on Twitter.
"The light you see in this image was emitted when the universe was 'only' 379,000 years old, so almost 13.7 billion years ago.
»
Important reminder: many people believe that the first image of the JWST is the deepest ever obtained.
We see on this image of the @Planck satellite even older things, which I tell in the thread to be unrolled below!
👇 https://t.co/5xpWqHM3AF
— Eric Lagadec (@EricLagadec) July 17, 2022
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The universe being in constant expansion, it is possible to “rewind the film” to capture the past, explained the researcher last October on the social network.
The photo taken by the Planck satellite is also one of the oldest possible.
Before that, the universe was too hot to allow the formation of atoms, and the light was then systematically absorbed.
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