{"id":619984,"date":"2024-02-23T14:59:11","date_gmt":"2024-02-23T19:59:11","guid":{"rendered":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg"},"modified":"2024-02-23T15:45:38","modified_gmt":"2024-02-23T20:45:38","slug":"a-high-amount-of-ram","status":"inherit","type":"attachment","link":"https:\/\/www.nasa.gov\/image-detail\/a-high-amount-of-ram\/","title":{"rendered":"Hubble Views an Active Star-Forming Galaxy"},"author":219,"comment_status":"closed","ping_status":"closed","template":"","meta":{"nasa_hds_core_meta_l10n":"en-US","nasa_hds_core_meta_article_editor":"","nasa_hds_core_meta_article_contacts":[],"nasa_hds_core_meta_article_topic":"","nasa_hds_core_meta_linked_locations":[],"nasa_hds_core_meta_article_related_articles":[],"hds_migrate_meta_pr_release_id":"","hds_migrate_meta_pr_release_type":"","nasa_hds_core_meta_location_x":"","nasa_hds_core_meta_location_y":"","nasa_hds_core_meta_gallery_images":[],"nasa_hds_core_meta_video_cc_file_id":"","nasa_hds_core_meta_audio_cc_file_id":""},"media-tags":[],"read_time":1,"video_cc_url":"","audio_cc_url":"","credits":"ESA\/Hubble & NASA, M. Sun","original_date":{"stamp":1708300800,"display":"February 19th, 2024"},"description":{"rendered":"<p class=\"attachment\"><a href='https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"280\" height=\"300\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg?w=280\" class=\"attachment-medium size-medium\" alt=\"A dwarf spiral galaxy. The center is not particularly bright and is covered by some dust, while the outer disk and halo wrap around as if swirling in water. Across the face of the galaxy, an arc of brightly glowing spots marks areas where new stars are forming. The galaxy is surrounded by tiny, distant galaxies on a dark background.\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg 3698w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg?resize=280,300 280w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg?resize=768,822 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg?resize=956,1024 956w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg?resize=1435,1536 1435w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg?resize=1913,2048 1913w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg?resize=374,400 374w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg?resize=560,600 560w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg?resize=841,900 841w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg?resize=1121,1200 1121w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg?resize=1868,2000 1868w\" sizes=\"(max-width: 280px) 100vw, 280px\" \/><\/a><\/p>\n<p>This NASA\/ESA Hubble Space Telescope image features IC 3476, a dwarf galaxy that lies about 54 million light-years from Earth in the constellation Coma Berenices. While this image does not look very dramatic \u2013 we might say it looks almost serene \u2013 the actual physical events taking place in IC 3476 are highly energetic. In fact, the little galaxy is undergoing a process called ram pressure stripping that is driving unusually high levels of star formation in regions of the galaxy.<\/p>\n"},"caption":{"rendered":"<p>This NASA\/ESA Hubble Space Telescope image features IC 3476, a dwarf galaxy that lies about 54 million light-years from Earth in the constellation Coma Berenices. While this image does not look very dramatic \u2013 we might say it looks almost serene \u2013 the actual physical events taking place in IC 3476 are highly energetic. In fact, the little galaxy is undergoing a process called ram pressure stripping that is driving unusually high levels of star formation in regions of the galaxy.<\/p>\n"},"alt_text":"A dwarf spiral galaxy. The center is not particularly bright and is covered by some dust, while the outer disk and halo wrap around as if swirling in water. Across the face of the galaxy, an arc of brightly glowing spots marks areas where new stars are forming. The galaxy is surrounded by tiny, distant galaxies on a dark background.","media_type":"image","mime_type":"image\/jpeg","media_details":{"width":3698,"height":3959,"file":"2024\/02\/potw2408a.jpg","filesize":4284105,"sizes":{"thumbnail":{"file":"potw2408a.jpg?resize=150,150","width":150,"height":150,"filesize":4284105,"mime_type":"image\/jpeg","source_url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg?w=150&h=150&crop=1"},"medium":{"file":"potw2408a.jpg?resize=280,300","width":280,"height":300,"filesize":4284105,"mime_type":"image\/jpeg","source_url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg?w=280"},"medium_large":{"file":"potw2408a.jpg?resize=768,822","width":768,"height":822,"filesize":4284105,"mime_type":"image\/jpeg","source_url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg?w=640"},"large":{"file":"potw2408a.jpg?resize=956,1024","width":956,"height":1024,"filesize":4284105,"mime_type":"image\/jpeg","source_url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg?w=640"},"1536x1536":{"file":"potw2408a.jpg?resize=1435,1536","width":1435,"height":1536,"filesize":4284105,"mime_type":"image\/jpeg","source_url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg?w=1435"},"2048x2048":{"file":"potw2408a.jpg?resize=1913,2048","width":1913,"height":2048,"filesize":4284105,"mime_type":"image\/jpeg","source_url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg?w=1913"},"thumbnail-sm":{"file":"potw2408a.jpg?resize=50,50","width":50,"height":50,"filesize":4284105,"mime_type":"image\/jpeg","source_url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg?w=50&h=50&crop=1"},"thumbnail-md":{"file":"potw2408a.jpg?resize=100,100","width":100,"height":100,"filesize":4284105,"mime_type":"image\/jpeg","source_url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg?w=100&h=100&crop=1"},"thumbnail-lg":{"file":"potw2408a.jpg?resize=200,200","width":200,"height":200,"filesize":4284105,"mime_type":"image\/jpeg","source_url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg?w=200&h=200&crop=1"},"card-xsm":{"file":"potw2408a.jpg?resize=374,400","width":374,"height":400,"filesize":4284105,"mime_type":"image\/jpeg","source_url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg?w=374"},"card-sm":{"file":"potw2408a.jpg?resize=560,600","width":560,"height":600,"filesize":4284105,"mime_type":"image\/jpeg","source_url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg?w=560"},"card-md":{"file":"potw2408a.jpg?resize=841,900","width":841,"height":900,"filesize":4284105,"mime_type":"image\/jpeg","source_url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg?w=841"},"card-lg":{"file":"potw2408a.jpg?resize=1121,1200","width":1121,"height":1200,"filesize":4284105,"mime_type":"image\/jpeg","source_url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg?w=1121"},"fullwidth":{"file":"potw2408a.jpg?resize=1868,2000","width":1868,"height":2000,"filesize":4284105,"mime_type":"image\/jpeg","source_url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg?w=1868"},"full":{"file":"potw2408a.jpg","width":640,"height":685,"mime_type":"image\/jpeg","source_url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg"}},"image_meta":{"aperture":"0","credit":"ESA\/Hubble & NASA, M. Sun","camera":"","caption":"This image features IC 3476, a dwarf galaxy that lies about 54 million light-years from Earth in the constellation Coma Berenices. Whilst this image does not look very dramatic \u2014 if we were to anthropomorphise the galaxy, we might say it looks almost serene \u2014 the actual physical events taking place in IC 3476 are highly energetic. In fact, the little galaxy is undergoing a process known as ram pressure stripping, which is driving unusually high levels of star formation within regions of the galaxy itself.\u00a0 We tend to associate the letters \u2018ram\u2019 with the acronym RAM, which refers to Random Access Memory in computing. However, ram pressure has a totally distinct definition in physics: it is the pressure exerted on a body when it moves through some form of fluid, due to the overall resistance of the fluid. In the case of entire galaxies experiencing ram pressure, the galaxies are the \u2018bodies\u2019 and the intergalactic or intracluster medium (the dust and gas that permeates the space between galaxies, and for the latter the spaces between galaxies in clusters) is the \u2018fluid\u2019.\u00a0 Ram pressure stripping occurs when the ram pressure results in gas being stripped from the galaxy. This stripping away of gas can lead to a reduction in the level of star formation, or even its complete cessation, as gas is absolutely key to the formation of stars. However, the ram pressure can also cause other parts of the galaxy to be compressed, which can actually boost star formation. This is what seems to be taking place in IC 3476: there seems to be absolutely no star formation going on at the edge of the galaxy bearing the brunt of the ram pressure stripping, but then star formation rates within deeper regions of the galaxy seem to be markedly above the average.\u00a0 [Image Description: A dwarf spiral galaxy. The centre is not particularly bright and is covered by some dust, while the outer disc and halo wrap around as if swirling water. Across the face of the galaxy, an arc of b","created_timestamp":"1708322400","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"A high amount of ram","orientation":"0","keywords":["IC 3476"]},"credits":"ESA\/Hubble & NASA, M. Sun","original_date":{"stamp":1708300800,"display":"February 19th, 2024"}},"post":null,"source_url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/potw2408a.jpg","_links":{"self":[{"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/media\/619984"}],"collection":[{"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/media"}],"about":[{"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/types\/attachment"}],"author":[{"embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/users\/219"}],"wp:term":[{"taxonomy":"media-tags","embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/media-tags?post=619984"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}