
James Webb Space Telescope First Deep Field, Galaxy Cluster Smacs 0723

by Nasa
Title
James Webb Space Telescope First Deep Field, Galaxy Cluster Smacs 0723
Artist
Nasa
Medium
Photograph - Photography
Description
NASA’s James Webb Space Telescope image of the deepest and sharpest infrared image of the distant universe so far. Webb’s First Deep Field is galaxy cluster SMACS 0723, and it is teeming with thousands of galaxies – including the faintest objects ever observed in the infrared. This is one of the first images from the James Webb Space Telescope released on July 12th, 2022. This image shows the galaxy cluster SMACS 0723 as it appeared 4.6 billion years ago, with many more galaxies in front of and behind the cluster. Webb’s image is approximately the size of a grain of sand held at arm’s length, a tiny sliver of the vast universe. The combined mass of this galaxy cluster acts as a gravitational lens, magnifying more distant galaxies, including some seen when the universe was less than a billion years old. 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 Hubble Space Telescope’s deepest fields, which took weeks. And this is only the beginning. Researchers will continue to use Webb to take longer exposures, revealing more of our vast universe.
Uploaded
July 12th, 2022
Embed
Share
Similar Subjects
Comments
There are no comments for James Webb Space Telescope First Deep Field, Galaxy Cluster Smacs 0723. Click here to post the first comment.