{"id":4530,"date":"2022-07-15T18:40:13","date_gmt":"2022-07-15T18:40:13","guid":{"rendered":"http:\/\/localtalkweekly.com\/?p=4530"},"modified":"2022-07-15T18:40:17","modified_gmt":"2022-07-15T18:40:17","slug":"nasa-telescope-delivers-new-images-of-the-universe","status":"publish","type":"post","link":"https:\/\/localtalkweekly.com\/index.php\/2022\/07\/15\/nasa-telescope-delivers-new-images-of-the-universe\/","title":{"rendered":"NASA TELESCOPE DELIVERS NEW IMAGES OF THE UNIVERSE"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong><em>Photo credit: NASA, ESA, CSA, and STScI<\/em><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">NASA\u2019s James Webb Space Telescope has delivered the deepest and sharpest infrared image of the distant universe so far. Webb\u2019s First Deep Field is galaxy cluster SMACS 0723, and it is teeming with thousands of galaxies &#8211; including the faintest objects ever observed in the infrared.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Webb\u2019s image is approximately the size of a grain of sand held at arm\u2019s 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.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This deep field, taken by Webb\u2019s Near-Infrared Camera (NIRCam), is a composite made from images at different wavelengths, totaling 12.5 hours &#8211; achieving depths at infrared wavelengths beyond the Hubble Space Telescope\u2019s 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.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">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. Much more about this cluster will be revealed as researchers begin digging into Webb\u2019s data. This field was also imaged by Webb\u2019s Mid-Infrared Instrument (MIRI), which observes mid-infrared light.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Webb\u2019s NIRCam has brought distant galaxies into sharp focus &#8211; they have tiny, faint structures that have never been seen before, including star clusters and diffuse features.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Light from these galaxies took billions of years to reach us. We are looking back in time to within a billion years after the big bang when viewing the youngest galaxies in this field. The light was stretched by the expansion of the universe to infrared wavelengths that Webb was designed to observe. Researchers will soon begin to learn more about the galaxies\u2019 masses, ages, histories, and compositions.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Other features include the prominent arcs in this field. The powerful gravitational field of a galaxy cluster can bend the light rays from more distant galaxies behind it, just as a magnifying glass bends and warps images. Stars are also captured with prominent diffraction spikes, as they appear brighter at shorter wavelengths.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Webb\u2019s MIRI image offers a kaleidoscope of colors and highlights where the dust is \u2013 a major ingredient for star formation, and ultimately life itself. Blue galaxies contain stars, but very little dust. The red objects in this field are enshrouded in thick layers of dust. Green galaxies are populated with hydrocarbons and other chemical compounds. Researchers will be able to use data like these to understand how galaxies form, grow, and merge with each other, and in some cases why they stop forming stars altogether.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In addition to taking images, two of Webb\u2019s instruments also obtained spectra &#8211; data that reveal objects\u2019 physical and chemical properties that will help researchers identify many more details about distant galaxies in this field. Webb\u2019s Near Infrared Spectrograph (NIRSpec) microshutter array observed 48 individual galaxies at the same time &#8211; a new technology used for the first time in space &#8211; returning a full suite of details about each. The data revealed light from one galaxy that traveled for 13.1 billion years before Webb\u2019s mirrors captured it. NIRSpec data also demonstrate how detailed galaxy spectra will be with Webb observations.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Finally, Webb\u2019s Near-Infrared Imager and Slitless Spectrograph (NIRISS) used Wide-Field Slitless Spectroscopy to capture spectra of all the objects in the entire field of view at once. Among the results, it proves that one of the galaxies has a mirror image.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SMACS 0723 can be viewed near the constellation Volans in the southern sky.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Photo credit: NASA, ESA, CSA, and STScI NASA\u2019s James Webb Space Telescope has delivered the deepest and sharpest infrared image of the distant universe so far. Webb\u2019s First Deep Field is galaxy cluster SMACS 0723, and it is teeming with thousands of galaxies &#8211; including the faintest objects ever observed in the infrared. Webb\u2019s image [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4532,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4530","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-topstories"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>NASA TELESCOPE DELIVERS NEW IMAGES OF THE UNIVERSE -<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/localtalkweekly.com\/index.php\/2022\/07\/15\/nasa-telescope-delivers-new-images-of-the-universe\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"NASA TELESCOPE DELIVERS NEW IMAGES OF THE UNIVERSE -\" \/>\n<meta property=\"og:description\" content=\"Photo credit: NASA, ESA, CSA, and STScI NASA\u2019s James Webb Space Telescope has delivered the deepest and sharpest infrared image of the distant universe so far. Webb\u2019s First Deep Field is galaxy cluster SMACS 0723, and it is teeming with thousands of galaxies &#8211; including the faintest objects ever observed in the infrared. 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