The Webb Space Telescope’s latest target is one previously imaged by Hubble: the spiral galaxy EGS23205. Findings like this one will give us an understanding of the early universe and how the stars and galaxies took shape in the past.
The two images above show EGS23205 as seen by Hubble and Webb. The Hubble image of the galaxy (received in the near-infrared) is very noisy, and the structure of the galaxy is more difficult to discern. But the Webb image (at mid-equals below) is much crisper, revealing a bright bar of stars extending from the galactic center.
Star clusters are huge galactic cross-sections composed of countless stars. Barriers play an important role in galactic evolution; they push gas toward the galactic center, helping fuel the formation of stars and supermassive black holes that lie within galactic nuclei. Our Milky Way galaxy is a spiral gate.
It was an image analysis at the bottom to the preprint server arXiv last year. Webb has imaged many ancient galaxies in his mere six months of scientific operations.
Some are Webb’s targets I have not yet seen the first galaxiesand Webb appear as a little more than 100 million years after the Big Bang (it was already close to 14 billion years ago).
EGS23205 was seen as about 11 billion years ago. The image also shows that the first galaxies had well-defined bars (they were spiral galaxies premeditated long after you arrive in the universe).
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“The Hubble data bars pop out in a barely visible way in the JWST image, showing the tremendous power of the JWST to see the underlying structure in galaxiesShardha Jogee, an astrologer at UT Austin and co-author of the study, in Aenean sometimes mourns.
Webb imaged before other objects captured by Hubble. In OctoberHe looked at the new $10 billion watchtower of Creation plumes of gas and dust in the Eagle Nebula. That same month, Webb’s team produce an image of the galaxy bus 270 million light-years from Earth, reported by Hubble in 2008.
The two telescopes observe most of space at different wavelengths – Hubble primarily at visible wavelengths and Webb primarily at infrared and near-infrared. Webb’s living device is built on Hubble’s mechanical shoulders. Next to the picture comparisons show the differences in these observations, and what is possible with the latest technology.
More: A Year Ahead in Astronomy
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