https://xcdr.tv/videos/watch/5191595c-ea8d-4b3f-be2e-3645252bc8d9 Astronomers, using NASA’s Hubble Space Telescope, have observed ultraviolet light escaping from a galaxy that has existed since only 1.4 billion years after the big bang. The galaxy, called MXDFz4.4, appears during a critical period known as the Era of Reionization, when the universe transformed from a dense cosmic fog into the clear cosmos we see today. This finding implies that similar galaxies in the distant, early universe were responsible for clearing the neutral fog of hydrogen gas that once filled the cosmos. For more information, visit science.nasa.gov/mission/hubble Credit: NASA's Goddard Space Flight Center Paul Morris: Lead Producer Music Credit: "Planet Fly By" by Timothy James Cornick [PRS] via BBC Production Music [PRS] and Universal Production Music This video can be freely shared and downloaded at https://svs.gsfc.nasa.gov/15050. While the video in its entirety can be shared without permission, the music and some individual imagery may have been obtained through permission and may not be excised or remixed in other products. Specific details on such imagery may be found here: https://svs.gsfc.nasa.gov/15050. For more information on NASA’s media guidelines, visit https://www.nasa.gov/multimedia/guidelines/index.html. See more Hubble videos on YouTube: https://www.youtube.com/playlist?list=PLiuUQ9asub3Ta8mqP5LNiOhOygRzue8kN Follow NASA's Hubble Space Telescope: · Facebook: https://www.facebook.com/NASAHubble · X: https://twitter.com/NASAHubble · Instagram: https://www.instagram.com/NASAHubble · Flickr: https://www.flickr.com/photos/nasahubble If you liked this video, subscribe to the NASA Goddard YouTube channel: https://www.youtube.com/NASAGoddard Follow NASA’s Goddard Space Flight Center · Instagram http://www.instagram.com/nasagoddard · X http://twitter.com/NASAGoddard · Facebook: http://www.facebook.com/NASAGoddard · Flickr http://www.flickr.com/photos/gsfc Wed, 24 Jun 2026 05:45:03 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://xcdr.tv https://xcdr.tv/lazy-static/avatars/d7ff3488-9036-438f-95d1-547afee4fcf4.png https://xcdr.tv/videos/watch/5191595c-ea8d-4b3f-be2e-3645252bc8d9 All rights reserved, unless otherwise specified in the terms specified at https://xcdr.tv/about and potential licenses granted by each content's rightholder.