The James Webb Space Telescope has captured images of galaxies from a time when the Universe was less than a billion years old.
Welcome back to our examination of what the James Webb Space Telescope has revealed about the Universe…so far.and revealed the earliest galaxies in the Universe. These observations also allowed astronomers to update their estimates on cosmic expansion , something they have been trying to do for decades.than our cosmological models predicted. In addition, the galaxies were much brighter than expected, suggesting that stars formed more rapidly than these models predicted.
Later analysis confirmed the presence of carbon dioxide and other chemical abundances. This was highly unexpected since the planet was believed too hot to support clouds in its atmosphere., a rocky planet several times the size and mass of Earth. This planet orbits a red dwarf star about 120 light-years from Earth and was originally observed in 2015.
In 2023, Webb observed galaxies as they existed when the Universe was less than one billion years old. An interesting find occurred when astronomers studiedHowever, they were somewhat surprised to see an SMBH at the center of this young galaxy roughly 9 million times the mass of the Sun. According to a statement issued by the
“The leading thought before JWST was that black holes formed from stars, and the stellar black holes somehow grew into the SMBHs that appear at later times. This can be explained so long as these early galaxies have much more mass in stars than the mass of the central SMBH. For CEERS 1019, this still holds true, albeit barely. It wasn’t until we found UHZ1, and dual observed with Chandra, that we actually found that overmassive black hole and learned, ‘no, this origin story doesn’t work at all.
For example, the JWST’s infrared instruments provided new and breathtaking images of the gas and “ice” giants of the Solar System – Jupiter, Saturn, Uranus, and Neptune. These instruments’ high resolution and sophistication revealed some interesting details. This included breathtaking images of Jupiter’s moons, atmosphere, rings, and some unexpected finds.
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