{"id":311118,"date":"2025-08-02T05:21:11","date_gmt":"2025-08-02T05:21:11","guid":{"rendered":"https:\/\/www.europesays.com\/uk\/311118\/"},"modified":"2025-08-02T05:21:11","modified_gmt":"2025-08-02T05:21:11","slug":"webb-visits-hubble-ultra-deep-field","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/uk\/311118\/","title":{"rendered":"Webb Visits \u2018Hubble Ultra Deep Field\u2019"},"content":{"rendered":"

Astronomers using the NASA\/ESA\/CSA James Webb Space Telescope have observed the Hubble Ultra Deep Field<\/a> (HUDF), an area of deep space with nearly 10,000 galaxies in the constellation Fornax.<\/strong><\/p>\n

\"This<\/a><\/p>\n

This Webb image shows the Hubble Ultra Deep Field, an area of deep space with thousands of galaxies in various shapes and sizes on a black background. Image credit: NASA \/ ESA \/ CSA \/ Webb \/ G. \u00d6stlin \/ P. G. Perez-Gonzalez \/ J. Melinder \/ JADES Collaboration \/ M. Zamani, ESA & Webb.<\/p>\n

The original HUDF images were pioneering deep-field observations with Hubble published in 2004.<\/p>\n

They probed more deeply than ever before and revealed a menagerie of galaxies dating back to less than a billion years after the Big Bang.<\/p>\n

The area was subsequently observed many times by Hubble and other telescopes.<\/p>\n

\u201cThe field shown here, known as the MIRI Deep Imaging Survey (MIDIS) region, was observed with the shortest-wavelength filter of Webb\u2019s Mid-Infrared Instrument (MIRI) for nearly 100 hours,\u201d the Webb astronomers said in a statement.<\/p>\n

\u201cThis is Webb\u2019s longest observation of an extragalactic field in one filter so far, producing one of the deepest views ever obtained of the Universe.\u201d<\/p>\n

\u201cCombined with data from Webb\u2019s Near-Infrared Camera (NIRCam), this image allows astronomers to explore how galaxies formed and evolved over billions of years.\u201d<\/p>\n

\u201cThese deep observations have revealed more than 2,500 sources in this tiny patch of sky.\u201d<\/p>\n

\u201cAmong them are hundreds of extremely red galaxies \u2014 some of which are likely massive, dust-obscured systems or evolved galaxies with mature stars that formed early in the Universe\u2019s history.\u201d<\/p>\n

\u201cThanks to Webb\u2019s sharp resolution, even at mid-infrared wavelengths, researchers can resolve the structures of many of these galaxies and study how their light is distributed, shedding light on their growth and evolution.\u201d<\/p>\n

In the new Webb image of HUDF, the colors that have been assigned to different kinds of infrared light highlight the fine distinctions astronomers can make with these deep data.<\/p>\n

\u201cOrange and red represent the longest mid-infrared wavelengths,\u201d the astronomers said.<\/p>\n

\u201cThe galaxies in these colors have extra features \u2014 such as high concentrations of dust, copious star formation, or an active galactic nucleus (AGN) at their center \u2014 which emit more of this farther infrared light.\u201d<\/p>\n

\u201cSmall, greenish-white galaxies are particularly distant, with high redshift.\u201d<\/p>\n

\u201cThis shifts their light spectrum into the peak mid-infrared wavelengths of the data, which are depicted in white and green.\u201d<\/p>\n

\u201cMost of the galaxies in this image lack any such mid-infrared boosting features, leaving them most bright at shorter near-infrared wavelengths, which are depicted with blue and cyan colors.\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"Astronomers using the NASA\/ESA\/CSA James Webb Space Telescope have observed the Hubble Ultra Deep Field (HUDF), an area…\n","protected":false},"author":2,"featured_media":311119,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3844],"tags":[1157,13918,1159,6680,26969,113642,113643,874,70,413,16,15,6684,1164],"class_list":{"0":"post-311118","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-space","8":"tag-csa","9":"tag-early-universe","10":"tag-esa","11":"tag-galaxy","12":"tag-hubble","13":"tag-hubble-ultra-deep-field","14":"tag-ir","15":"tag-nasa","16":"tag-science","17":"tag-space","18":"tag-uk","19":"tag-united-kingdom","20":"tag-universe","21":"tag-webb"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@uk\/114957496628388185","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/uk\/wp-json\/wp\/v2\/posts\/311118","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/uk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/uk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/uk\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/uk\/wp-json\/wp\/v2\/comments?post=311118"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/uk\/wp-json\/wp\/v2\/posts\/311118\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/uk\/wp-json\/wp\/v2\/media\/311119"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/uk\/wp-json\/wp\/v2\/media?parent=311118"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/uk\/wp-json\/wp\/v2\/categories?post=311118"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/uk\/wp-json\/wp\/v2\/tags?post=311118"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}