NASA’s Webb Delivers Deepest Infrared Image of Universe Yet : 無料・フリー素材/写真
NASA’s Webb Delivers Deepest Infrared Image of Universe Yet / James Webb Space Telescope
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
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| 説明 | Sneak a peek at the deepest and sharpest infrared image of the early universe ever taken — all in a day’s work for the James Webb Space Telescope. (Literally! Webb was able to capture this image in less than one day, while similar deep field images from Hubble can take multiple weeks.) This is Webb’s first image released as we begin to #UnfoldTheUniverse: nasa.gov/webbfirstimages/ If you held a grain of sand up to the sky at arm’s length, that tiny speck is the size of Webb’s view in this image. Imagine — galaxies galore within a grain, including light from galaxies that traveled billions of years to us! Why do some of the galaxies in this image appear bent? The combined mass of this galaxy cluster acts as a “gravitational lens,” bending light rays from more distant galaxies behind it, magnifying them. This image isn’t the farthest back we’ve ever observed. Non-infrared missions like COBE and WMAP saw the universe much closer to the Big Bang (about 380,000 years after), when there was only microwave background radiation, but no stars or galaxies yet. Webb sees a few 100 million years after the Big Bang. The James Webb Space Telescope is an international collaboration between NASA, the European Space Agency and the Canadian Space Agency. The Space Telescope Science Institute is the science and mission operations center for Webb. Credits: NASA, ESA, CSA, and STScI Image DescriptionThe background of space is black. Thousands of galaxies appear all across the view. Their shapes and colors vary. Some are various shades of orange, others are white. Most stars appear blue, and are sometimes as large as more distant galaxies that appear next to them. A very bright star is just above and left of center. It has eight bright blue, long diffraction spikes. Between 4 o’clock and 6 o’clock in its spikes are several very bright galaxies. A group of three are in the middle, and two are closer to 4 o’clock. These galaxies are part of the galaxy cluster SMACS 0723, and they are warping the appearances of galaxies seen around them. Long orange arcs appear at left and right toward the center. |
| 撮影日 | 2022-07-11 18:22:34 |
| 撮影者 | James Webb Space Telescope , Greenbelt, MD, USA |
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