{"id":96155,"date":"2025-07-27T07:29:13","date_gmt":"2025-07-27T07:29:13","guid":{"rendered":"https:\/\/www.europesays.com\/us\/96155\/"},"modified":"2025-07-27T07:29:13","modified_gmt":"2025-07-27T07:29:13","slug":"the-james-webb-space-telescope-has-found-the-most-distant-galaxy-ever-seen-at-the-dawn-of-the-cosmos-again","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/us\/96155\/","title":{"rendered":"The James Webb Space Telescope has found the most distant galaxy ever seen, at the dawn of the cosmos. Again."},"content":{"rendered":"

One of the James Webb Space Telescope’s superpowers is its ability to investigate the cosmic dawn, the first few hundred million years after the Big Bang.<\/p>\n

The telescope has once again lived up to its reputation, spotting light from a galaxy which existed only 280 million years after the Big Bang, the most distant ever detected.<\/p>\n

Known as MoM-z14, it displaces the previous record holder, JADES-GS-z14-0<\/a>,\u00a0which existed 300 million years after the Big Bang<\/a>.<\/p>\n

\"MoM-z14,MoM-z14, the most distant galaxy ever seen, but for how long? Credit: Rohan P. Naidu et al (2025)\/NASA\/JWST
\nHow Webb sees galaxies at the beginning of time<\/strong><\/p>\n

When looking for these distant galaxies so early in the Universe<\/a>, the James Webb Space Telescope investigates objects with high redshift<\/a>.<\/p>\n

Redshift, often denoted by z, is where the wavelength of light<\/a> becomes stretched as it travels to us through expanding space<\/a>.<\/p>\n

The redder the light, the higher the redshift and the more distant the object.<\/p>\n

You may have heard of the phenomenon in the case of sound; it\u2019s similar to how an ambulance siren drops in pitch as the vehicle speeds away from you.\u00a0<\/p>\n

By detecting redshifted light with JWST\u2019s infrared instruments, astronomers can determine the distance and composition of early galaxies.<\/p>\n

\"AtAt a redshift of z = 14.44, MoM-z14 usurps the former record holder JADES-GS-z14-0. Credit: Rohan P. Naidu et al (2025)\/NASA\/JWST, NASA\/ESA\/CSA\/STScI\/Brant Robertson (UC Santa Cruz) Ben Johnson (CfA) Sandro Tacchella (Cambridge) Phill Cargile (CfA)
\nWhat Webb found at MoM-z14<\/strong><\/p>\n

The newly discovered galaxy, MoM-z14, has a redshift of just over 14.<\/p>\n

While the detection of such a distant object is impressive, what\u2019s more surprising is the existence of these galaxies themselves.<\/p>\n

\u201cJWST has revealed a stunning population of bright galaxies<\/a> at surprisingly early epochs, z > 10, where few such sources were expected,\u201d the authors noted in their early pre-publication study.<\/p>\n

At this stage in the Universe\u2019s history, astronomers had not anticipated detecting any galaxies using JWST.<\/p>\n

Instead, they have found more than 100 relatively bright galaxies from the period just after the cosmic dawn.<\/p>\n

JWST observations have also identified the presence of heavier elements, such as carbon and nitrogen, in MoM-z14.<\/p>\n

This suggests that even earlier, less chemically evolved galaxies exist.<\/p>\n

These galaxies, composed solely of the light elements hydrogen and helium, are still waiting to be discovered.<\/p>\n

The researchers comment: “JWST appears poised to drive a series of great expansions of the cosmic frontier \u2013 previously unimaginable redshifts, approaching the era of the very first stars, no longer seem far away.”<\/p>\n","protected":false},"excerpt":{"rendered":"One of the James Webb Space Telescope’s superpowers is its ability to investigate the cosmic dawn, the first…\n","protected":false},"author":3,"featured_media":96156,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24],"tags":[159,783,67,132,68],"class_list":{"0":"post-96155","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-space","8":"tag-science","9":"tag-space","10":"tag-united-states","11":"tag-unitedstates","12":"tag-us"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@us\/114924025853685618","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/posts\/96155","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/comments?post=96155"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/posts\/96155\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/media\/96156"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/media?parent=96155"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/categories?post=96155"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/tags?post=96155"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}