{"id":15700,"date":"2018-03-09T15:41:17","date_gmt":"2018-03-09T20:41:17","guid":{"rendered":"http:\/\/hobbyspace.com\/Blog\/?p=15700"},"modified":"2018-03-09T15:41:17","modified_gmt":"2018-03-09T20:41:17","slug":"hubble-observes-star-formation-as-two-galaxies-collide","status":"publish","type":"post","link":"https:\/\/hobbyspace.com\/Blog\/?p=15700","title":{"rendered":"Hubble observes star formation as two galaxies collide"},"content":{"rendered":"<p>A new report from <a href=\"https:\/\/www.spacetelescope.org\/\" target=\"_blank\" rel=\"noopener\">ESA\/Hubble<\/a>:<\/p>\n<p style=\"text-align: center;\"><strong><a href=\"https:\/\/www.spacetelescope.org\/news\/heic1805\/?lang\" target=\"_d\">A peculiar galactic clash<\/a><\/strong><\/p>\n<figure id=\"attachment_15701\" aria-describedby=\"caption-attachment-15701\" style=\"width: 500px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.spacetelescope.org\/images\/heic1805a\/\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"15701\" data-permalink=\"https:\/\/hobbyspace.com\/Blog\/?attachment_id=15701\" data-orig-file=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/03\/heic1805a1.jpg\" data-orig-size=\"700,680\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;ESA\/Hubble, NASA&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;Arp 256 is a stunning system of two spiral galaxies, about 350 million light-years away, in an early stage of merging. The image, taken with the NASA\/ESA Hubble Space Telescope, displays two galaxies with strongly distorted shapes and an astonishing number of blue knots of star formation that look like exploding fireworks. The star formation was triggered by the close interaction between the two galaxies. This image was taken by Hubble\\u2019s Advanced Camera for Surveys (ACS) and the Wide Field Camera 3 (WFC3). It is a new version of an image already released in 2008 that was part a large collection of 59 images of merging galaxies taken for Hubble\\u2019s 18th anniversary.&quot;,&quot;created_timestamp&quot;:&quot;1520524800&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;Crash in progress&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Crash in progress\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Arp 256 is a stunning system of two spiral galaxies, about 350 million light-years away, in an early stage of merging. The image, taken with the NASA\/ESA Hubble Space Telescope, displays two galaxies with strongly distorted shapes and an astonishing number of blue knots of star formation that look like exploding fireworks. The star formation was triggered by the close interaction between the two galaxies. This image was taken by Hubble\u2019s Advanced Camera for Surveys (ACS) and the Wide Field Camera 3 (WFC3). It is a new version of an image already released in 2008 that was part a large collection of 59 images of merging galaxies taken for Hubble\u2019s 18th anniversary.&lt;\/p&gt;\n\" data-medium-file=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/03\/heic1805a1-300x291.jpg\" data-large-file=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/03\/heic1805a1.jpg\" class=\"wp-image-15701\" src=\"http:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/03\/heic1805a1.jpg\" alt=\"\" width=\"500\" height=\"486\" srcset=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/03\/heic1805a1.jpg 700w, https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/03\/heic1805a1-300x291.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><figcaption id=\"caption-attachment-15701\" class=\"wp-caption-text\"><em>Arp 256 is a stunning system of two spiral galaxies, about 350 million light-years away, in an early stage of merging. The image, taken with the NASA\/ESA Hubble Space Telescope, displays two galaxies with strongly distorted shapes and an astonishing number of blue knots of star formation that look like exploding fireworks. The star formation was triggered by the close interaction between the two galaxies. This image was taken by Hubble\u2019s Advanced Camera for Surveys (ACS) and the Wide Field Camera 3 (WFC3). It is a new version of an image already released in 2008 that was part a large collection of 59 images of merging galaxies taken for Hubble\u2019s 18th anniversary. [<a href=\"https:\/\/www.spacetelescope.org\/images\/heic1805a\/\" target=\"_blank\" rel=\"noopener\">Larger images<\/a>.]<\/em><\/figcaption><\/figure>\n<p class=\"text_intro pr_first\">Galaxies are not static islands of stars \u2014 they are dynamic and ever-changing, constantly on the move through the darkness of the Universe. Sometimes, as seen in this spectacular Hubble image of Arp 256, galaxies can collide in a crash of cosmic proportions.<\/p>\n<p>350 million light-years away in the constellation of\u00a0<a href=\"https:\/\/en.wikipedia.org\/wiki\/Cetus\" target=\"_d\">Cetus<\/a>\u00a0(the Sea Monster), a pair of\u00a0<a href=\"https:\/\/en.wikipedia.org\/wiki\/Barred_spiral_galaxy\" target=\"_d\">barred spiral galaxies<\/a>\u00a0have just begun a magnificent merger. This image suspends them in a single moment, freezing the chaotic spray of gas, dust and stars kicked up by the gravitational forces pulling the two galaxies together.<\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"1600\" height=\"900\" src=\"https:\/\/www.youtube.com\/embed\/lBMzr2aR-tU?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=en&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<p style=\"padding-left: 30px;\"><em>This video pans over NASA\/ESA Hubble Space Telescope observations of the system Arp 256, about 350 million light-years from Earth. The system consists of two spiral galaxies in an early stage of a merger. Though the two galaxies are still separated by a large distance, their shapes are already impressively disrupted by the gravitational forces.<\/em><\/p>\n<p style=\"padding-left: 30px;\"><em>Both galaxies show bright blue patches, which highlight regions of star formation. These regions also contain hot newborn stars. Like their distorted appearance, the bursts in star formation are also triggered by the gravitational interaction between the two galaxies.\u00a0Credit:\u00a0ESA\/Hubble, NASA\u00a0Music:\u00a0Astral Electronic<\/em><\/p>\n<p>Though their nuclei are still separated by a large distance, the shapes of the galaxies in Arp 256 are impressively distorted. The galaxy in the upper part of the image contains very pronounced\u00a0<a href=\"https:\/\/en.wikipedia.org\/wiki\/Tidal_tail\">tidal tails<\/a>\u00a0\u2014 long, extended ribbons of gas, dust and stars.<\/p>\n<p>The galaxies are ablaze with dazzling regions of\u00a0<a href=\"https:\/\/en.wikipedia.org\/wiki\/Star_formation\" target=\"_d\">star formation<\/a>: the bright blue fireworks are stellar nurseries, churning out hot infant stars. These vigorous bursts of new life are triggered by the massive gravitational interactions, which stir up interstellar gas and dust out of which stars are born.<\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"1600\" height=\"900\" src=\"https:\/\/www.youtube.com\/embed\/NrJuty5C_KU?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=en&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<p style=\"padding-left: 30px;\"><em>This video zooms in on the two interacting spiral galaxies of the ARP 256 system, about 350 million light-years away. It starts with a view of the night sky, focused on the constellation of\u00a0<a href=\"https:\/\/en.wikipedia.org\/wiki\/Cetus\">Cetus<\/a>\u00a0(the Sea Monster), as seen from the ground. It then zooms through observations from the Digitized Sky Survey 2, and ends with a view of Arp 256 obtained with the NASA\/ESA Hubble Space Telescope.\u00a0Credit:\u00a0ESA\/Hubble, NASA, Digitized Sky Survey 2,\u00a0Risinger.\u00a0 Music: Astral Electronic<\/em><\/p>\n<p>Arp 256 was first catalogued by Halton Arp in 1966, as one of 338 galaxies presented in the aptly-named\u00a0<a href=\"https:\/\/en.wikipedia.org\/wiki\/Atlas_of_Peculiar_Galaxies\" target=\"_d\">Atlas of Peculiar Galaxies<\/a>. The goal of the catalogue was to image examples of the weird and wonderful structures found among nearby galaxies, to provide snapshots of different stages of\u00a0<a href=\"https:\/\/en.wikipedia.org\/wiki\/Galaxy_formation_and_evolution\" target=\"_d\">galactic evolution<\/a>. These peculiar galaxies are like a natural experiment played out on a cosmic scale and by cataloguing them, astronomers can better understand the physical processes that warp spiral and elliptical galaxies into new shapes.<\/p>\n<p>Many galaxies in this catalogue are\u00a0<a href=\"https:\/\/en.wikipedia.org\/wiki\/Dwarf_galaxy\" target=\"_d\">dwarf galaxies<\/a>\u00a0with indistinct structures, or\u00a0<a href=\"https:\/\/en.wikipedia.org\/wiki\/Active_galactic_nucleus\" target=\"_d\">active galaxies<\/a>\u00a0generating powerful jets \u2014 but a large number of the galaxies are interacting, such as\u00a0<a href=\"https:\/\/en.wikipedia.org\/wiki\/Whirlpool_Galaxy\" target=\"_d\">Messier 51<\/a>, the\u00a0<a href=\"https:\/\/en.wikipedia.org\/wiki\/Antennae_Galaxies\" target=\"_d\">Antennae Galaxies<\/a>, and Arp 256. Such interactions often form streamer-like tidal tails as seen in Arp 256, as well as bridges of gas, dust and stars between the galaxies.<\/p>\n<p>Long ago, when our expanding Universe was much smaller, interactions and mergers were more common; in fact, they are thought to drive galactic evolution to this day. The galaxies in the Arp 256 system will continue their gravitational dance over the next millions of years, at first flirtatious, and then intimate, before finally morphing into a single galaxy.<\/p>\n<p>This spectacular image was taken by Hubble\u2019s\u00a0<a href=\"https:\/\/www.spacetelescope.org\/about\/general\/instruments\/acs\/\" target=\"_d\">Advanced Camera for Surveys<\/a>\u00a0(ACS) and the\u00a0<a href=\"https:\/\/www.spacetelescope.org\/about\/general\/instruments\/wfc3\/\" target=\"_d\">Wide Field Camera 3<\/a>(WFC3). It is a new version of an image already\u00a0<a href=\"http:\/\/www.spacetelescope.org\/images\/heic0810ag\/\" target=\"_d\">released in 2008<\/a>\u00a0that was part a large collection of 59 images of\u00a0<a href=\"https:\/\/www.spacetelescope.org\/news\/heic0810\/\" target=\"_d\">merging galaxies<\/a>\u00a0taken for Hubble\u2019s 18th anniversary.<\/p>\n<figure id=\"attachment_15702\" aria-describedby=\"caption-attachment-15702\" style=\"width: 500px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.spacetelescope.org\/images\/heic1805b\/\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"15702\" data-permalink=\"https:\/\/hobbyspace.com\/Blog\/?attachment_id=15702\" data-orig-file=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/03\/heic1805b1.jpg\" data-orig-size=\"700,725\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Wide-field view of Arp 256 (ground-based image)\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/03\/heic1805b1-290x300.jpg\" data-large-file=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/03\/heic1805b1.jpg\" class=\"wp-image-15702\" src=\"http:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/03\/heic1805b1.jpg\" alt=\"\" width=\"500\" height=\"518\" srcset=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/03\/heic1805b1.jpg 700w, https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/03\/heic1805b1-290x300.jpg 290w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><figcaption id=\"caption-attachment-15702\" class=\"wp-caption-text\"><em>This ground-based image shows the two spiral galaxies of the Arp 256 system and their surroundings. Credit: NASA, ESA, Digitized Sky Survey 2; Acknowledgement: Davide De Martin<\/em><\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>A new report from ESA\/Hubble: A peculiar galactic clash Galaxies are not static islands of stars \u2014 they are dynamic and ever-changing, constantly on the move through the darkness of the Universe. Sometimes, as seen in this spectacular Hubble image of Arp 256, galaxies can collide in a crash of cosmic proportions. 350 million light-years &hellip; <a href=\"https:\/\/hobbyspace.com\/Blog\/?p=15700\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Hubble observes star formation as two galaxies collide<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[12],"tags":[],"class_list":["post-15700","post","type-post","status-publish","format-standard","hentry","category-astronomy"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p34aWK-45e","jetpack-related-posts":[{"id":13232,"url":"https:\/\/hobbyspace.com\/Blog\/?p=13232","url_meta":{"origin":15700,"position":0},"title":"ESO: ALMA sees fast star formation in very early high-mass galaxies","author":"TopSpacer","date":"September 22, 2016","format":false,"excerpt":"Here's a new\u00a0report from the European Southern Observatory (ESO): ALMA Explores the Hubble Ultra Deep Field International teams of astronomers have used the Atacama Large Millimeter\/submillimeter Array (ALMA) to explore the distant corner of the Universe first revealed in the iconic images of the Hubble Ultra Deep Field (HUDF). 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Dunlop and colleagues, covering the full HUDF area.","src":"https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2016\/09\/eso1633a1.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":14690,"url":"https:\/\/hobbyspace.com\/Blog\/?p=14690","url_meta":{"origin":15700,"position":1},"title":"Hubble: Two galaxies &#8211; one big, one not so big &#8211; change shape as they near merger","author":"TopSpacer","date":"July 28, 2017","format":false,"excerpt":"The Hubble Telescope observes two galaxies Galactic David and Goliath The gravitational dance between two galaxies in our local neighbourhood has led to intriguing visual features in both as witnessed in this new NASA\/ESA Hubble Space Telescope image. 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