This is Webb’s First Deep Field This image of galaxy clus | ASTRONOMY

This is Webb’s First Deep Field

This image of galaxy cluster SMACS 0723 is overflowing with detail: Thousands of galaxies – including the faintest objects ever observed – have appeared in Webb’s view for the first time.

This deep field, taken by Webb’s Near-Infrared Camera (NIRCam), is a composite made from images at different wavelengths, totaling 12.5 hours – achieving depths at infrared wavelengths beyond the hubbleesa’s deepest fields, which took weeks.

The image shows the galaxy cluster SMACS 0723 as it appeared 4.6 billion years ago. The combined mass of this galaxy cluster acts as a gravitational lens, magnifying much more distant galaxies behind it. Webb’s NIRCam has brought those distant galaxies into sharp focus – they have tiny, faint structures that have never been seen before, including star clusters and diffuse features. Researchers will soon begin to learn more about the galaxies’ masses, ages, histories, and compositions, as Webb seeks the earliest galaxies in the Universe.

This image is among the telescope’s first-full colour images. The full suite will be released Tuesday 12 July, beginning at 16:30 CEST.

nasa, europeanspaceagency, canadianspaceagency, and space_telescopes

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