{"id":8884,"date":"2014-09-25T10:00:15","date_gmt":"2014-09-25T14:00:15","guid":{"rendered":"http:\/\/hobbyspace.com\/Blog\/?p=8884"},"modified":"2014-09-23T09:16:01","modified_gmt":"2014-09-23T13:16:01","slug":"hubble-telescope-observes-young-galaxy-in-our-own-local-group","status":"publish","type":"post","link":"https:\/\/hobbyspace.com\/Blog\/?p=8884","title":{"rendered":"Hubble telescope observes young galaxy in our own local group"},"content":{"rendered":"<p>An announcement from ESA\/Hubble:<\/p>\n<p style=\"text-align: center;\"><strong><a href=\"http:\/\/www.spacetelescope.org\/news\/heic1421\/\" target=\"_d\">A galaxy of deception<\/a><br \/>\n<\/strong><\/p>\n<p style=\"text-align: center;\"><em>Hubble snaps what looks like a young galaxy in the local Universe<\/em><\/p>\n<p class=\"text_intro pr_first\">Astronomers usually have to peer very far into the distance to see back in time, and view the Universe as it was when it was young. This new NASA\/ESA Hubble Space Telescope image of galaxy DDO 68, otherwise known as UGC 5340, was thought to offer an exception. This ragged collection of stars and gas clouds looks at first glance like a recently-formed galaxy in our own cosmic neighbourhood. But, is it really as young as it looks?<\/p>\n<p class=\"text_intro pr_first\" style=\"text-align: center;\"><a href=\"http:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2014\/09\/heic1421a.jpg\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"8885\" data-permalink=\"https:\/\/hobbyspace.com\/Blog\/?attachment_id=8885\" data-orig-file=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2014\/09\/heic1421a.jpg\" data-orig-size=\"1280,723\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;NASA, ESA Acknowledgement:\\u00a0A. A&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;This image from the NASA\/ESA Hubble Space Telescope shows a cosmic oddity, dwarf galaxy DDO 68. This ragged collection of stars and gas clouds looks at first glance like a recently-formed galaxy in our own cosmic neighbourhood. But, is it really as young as it looks?&quot;,&quot;created_timestamp&quot;:&quot;1411660800&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;Dwarf galaxy DDO 68&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Dwarf galaxy DDO 68\" data-image-description=\"&lt;p&gt;This image from the NASA\/ESA Hubble Space Telescope shows a cosmic oddity, dwarf galaxy DDO 68. This ragged collection of stars and gas clouds looks at first glance like a recently-formed galaxy in our own cosmic neighbourhood. But, is it really as young as it looks?&lt;\/p&gt;\n\" data-image-caption=\"\" data-large-file=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2014\/09\/heic1421a-1024x578.jpg\" class=\"aligncenter  wp-image-8885\" src=\"http:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2014\/09\/heic1421a-1024x578.jpg\" alt=\"Dwarf galaxy DDO 68\" width=\"500\" height=\"282\" srcset=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2014\/09\/heic1421a-1024x578.jpg 1024w, https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2014\/09\/heic1421a-300x169.jpg 300w, https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2014\/09\/heic1421a.jpg 1280w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/p>\n<p>Astronomers have studied galactic evolution for decades, gradually improving our knowledge of how galaxies have changed over cosmic history. The NASA\/ESA Hubble Space Telescope has played a big part in this, allowing astronomers to see further into the distance, and hence further back in time, than any telescope before it \u2014 capturing light that has taken billions of years to reach us.<\/p>\n<div id=\"flashplayer\">Loading player&#8230;<\/div>\n<p><script src=\"http:\/\/www.spacetelescope.org\/static\/djangoplicity\/shadowbox3\/libraries\/mediaplayer5\/jwplayer.js\" type=\"text\/javascript\"><\/script><script type=\"text\/javascript\">\/\/ <![CDATA[\nvar sdfile = 'http:\/\/www.spacetelescope.org\/static\/archives\/videos\/medium_flash\/heic1421a.flv';var imagefile = 'http:\/\/www.spacetelescope.org\/static\/archives\/videos\/videoframe\/heic1421a.jpg';var flashsrc = 'http:\/\/www.spacetelescope.org\/static\/djangoplicity\/shadowbox3\/libraries\/mediaplayer5\/player.swf';var sharelink = 'http:\/\/www.spacetelescope.org\/videos\/heic1421a\/';var sharecode = '';var gaid = 'UA-2368492-6';var ipadfile = 'http:\/\/www.spacetelescope.org\/static\/archives\/videos\/medium_podcast\/heic1421a.m4v';var mobilefile = 'http:\/\/www.spacetelescope.org\/static\/archives\/videos\/medium_podcast\/heic1421a.m4v';var hdfile = 'http:\/\/www.spacetelescope.org\/static\/archives\/videos\/hd_and_apple\/heic1421a.m4v';;\n\/\/ ]]><\/script><script src=\"http:\/\/www.spacetelescope.org\/static\/djangoplicity\/js\/videoembed.js\" type=\"text\/javascript\"><\/script><em>Zooming in on dwarf galaxy DDO 68<\/em><\/p>\n<p>Looking further into the very distant past to observe younger and younger galaxies is very valuable, but it is not without its problems\u00a0for astronomers. All newly-born galaxies lie very far\u00a0away from us and appear very small and faint in the images. On the contrary, all the galaxies near to us appear to be old ones.<\/p>\n<p>DDO 68, captured here by the NASA\/ESA Hubble Space Telescope, was one of the best candidates so far discovered for a newly-formed galaxy in our cosmic neighbourhood. The galaxy lies around 39 million light-years away from us; although this distance may seem huge, it is in fact roughly 50 times closer than the usual distances to such galaxies, which are on the order of several billions of light years.<\/p>\n<p>By studying galaxies of various ages, astronomers have found that those early in their lives are fundamentally different from those that are older. DDO 68 looks to be relatively youthful based on its structure, appearance, and composition. However, without more detailed modelling astronomers cannot be sure and they think it may be older than it lets on.<\/p>\n<p>Elderly galaxies tend to be larger thanks to collisions and mergers with other galaxies that have bulked them out, and are populated with a variety of different types of stars \u2014 including old, young, large, and small ones. Their chemical makeup is different too. Newly-formed galaxies have a similar composition to the primordial matter created in the Big Bang (hydrogen, helium and a little lithium), while older galaxies are enriched with heavier elements forged in stellar furnaces over multiple generations of stars.<\/p>\n<p>DDO 68 is the best representation yet of a primordial galaxy in the local Universe as it appears at first glance to be very low in heavier elements \u2014 whose presence would be a sign of the existence of previous generations of stars.\u00a0<\/p>\n<div id=\"flashplayer\">Loading player&#8230;<\/div>\n<p><script src=\"http:\/\/www.spacetelescope.org\/static\/djangoplicity\/shadowbox3\/libraries\/mediaplayer5\/jwplayer.js\" type=\"text\/javascript\"><\/script><script type=\"text\/javascript\">\/\/ <![CDATA[\nvar sdfile = 'http:\/\/www.spacetelescope.org\/static\/archives\/videos\/medium_flash\/heic1421b.flv';var imagefile = 'http:\/\/www.spacetelescope.org\/static\/archives\/videos\/videoframe\/heic1421b.jpg';var flashsrc = 'http:\/\/www.spacetelescope.org\/static\/djangoplicity\/shadowbox3\/libraries\/mediaplayer5\/player.swf';var sharelink = 'http:\/\/www.spacetelescope.org\/videos\/heic1421b\/';var sharecode = '';var gaid = 'UA-2368492-6';var ipadfile = 'http:\/\/www.spacetelescope.org\/static\/archives\/videos\/medium_podcast\/heic1421b.m4v';var mobilefile = 'http:\/\/www.spacetelescope.org\/static\/archives\/videos\/medium_podcast\/heic1421b.m4v';var hdfile = 'http:\/\/www.spacetelescope.org\/static\/archives\/videos\/hd_and_apple\/heic1421b.m4v';;\n\/\/ ]]><\/script><script src=\"http:\/\/www.spacetelescope.org\/static\/djangoplicity\/js\/videoembed.js\" type=\"text\/javascript\"><\/script><\/p>\n<p style=\"text-align: center;\"><em>Panning across DDO 68<\/em><\/p>\n<p>Hubble observations were carried out in order to study the properties of the galaxy\u2019s light, and to confirm whether or not there are any older stars in DDO 68. If there are, which there seem to be, this would disprove the hypothesis that it is entirely made up of young stars. If not, it would confirm the unique nature of this galaxy. More complex modelling is needed before we can know for sure but Hubble&#8217;s picture certainly gives us a beautiful view of this unusual object.<\/p>\n<p>The image is made up of exposures in visible and infrared light taken with Hubble&#8217;s Advanced Camera for Surveys.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>An announcement from ESA\/Hubble: A galaxy of deception Hubble snaps what looks like a young galaxy in the local Universe Astronomers usually have to peer very far into the distance to see back in time, and view the Universe as it was when it was young. This new NASA\/ESA Hubble Space Telescope image of galaxy &hellip; <a href=\"https:\/\/hobbyspace.com\/Blog\/?p=8884\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Hubble telescope observes young galaxy in our own local group<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","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-8884","post","type-post","status-publish","format-standard","hentry","category-astronomy"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p34aWK-2ji","jetpack-related-posts":[{"id":12921,"url":"https:\/\/hobbyspace.com\/Blog\/?p=12921","url_meta":{"origin":8884,"position":0},"title":"Hubble studies galactic cluster whose gravitation magnifies other more distant galaxies","author":"TopSpacer","date":"July 21, 2016","format":false,"excerpt":"A new report from the\u00a0Hubble space observatory: Space... the final frontier Fifty years ago Captain Kirk and the crew of the starship Enterprise began their journey into space \u2014 the final frontier. 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The huge mass of the cluster acts as a cosmic magnifying glass and enlarges even more distant galaxies, so they become bright enough for Hubble to see.","src":"https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2016\/07\/heic1615a1.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":13806,"url":"https:\/\/hobbyspace.com\/Blog\/?p=13806","url_meta":{"origin":8884,"position":1},"title":"Hubble telescope sees faster than expected expansion of the Universe","author":"TopSpacer","date":"January 26, 2017","format":false,"excerpt":"The latest cosmic finding with the\u00a0Hubble Space Telescope: Cosmic lenses support finding on faster than expected expansion of the Universe By using galaxies as giant gravitational lenses, an international group of astronomers using the NASA\/ESA Hubble Space Telescope has made an independent measurement of how fast the Universe is expanding.\u2026","rel":"","context":"In &quot;Astronomy&quot;","block_context":{"text":"Astronomy","link":"https:\/\/hobbyspace.com\/Blog\/?cat=12"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/01\/heic1702a1.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":15777,"url":"https:\/\/hobbyspace.com\/Blog\/?p=15777","url_meta":{"origin":8884,"position":2},"title":"Hubble discovers a local galaxy without dark matter","author":"TopSpacer","date":"March 28, 2018","format":false,"excerpt":"The latest finding from the Hubble Space Telescope: Hubble finds first galaxy in the local Universe without dark matter An international team of researchers using the NASA\/ESA Hubble Space Telescope and several other observatories have, for the first time, uncovered a galaxy in our cosmic neighborhood that is missing most\u2026","rel":"","context":"In &quot;Astronomy&quot;","block_context":{"text":"Astronomy","link":"https:\/\/hobbyspace.com\/Blog\/?cat=12"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/03\/heic1806a1.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":10457,"url":"https:\/\/hobbyspace.com\/Blog\/?p=10457","url_meta":{"origin":8884,"position":3},"title":"Hubble telescope celebrates 25 years in space","author":"TopSpacer","date":"April 24, 2015","format":false,"excerpt":"In celebration of the 25th anniversary of the launch of the Hubble Telescope, a beautiful image of the Westerlund 2 star cluster taken by the orbital observatory has been released:\u00a0Hubble Space Telescope Celebrates 25 Years of Unveiling the Universe - HubbleSite. Westerlund 2 star cluster.\u00a0Zoomable version. A 3-D\u00a0visualization\u00a0of the cluster:\u2026","rel":"","context":"In &quot;Astronomy&quot;","block_context":{"text":"Astronomy","link":"https:\/\/hobbyspace.com\/Blog\/?cat=12"},"img":{"alt_text":"0105-4x5color.ai","src":"https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2015\/04\/hs-2015-12-a-web_print1-1024x819.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":11350,"url":"https:\/\/hobbyspace.com\/Blog\/?p=11350","url_meta":{"origin":8884,"position":4},"title":"Hubble and other telescopes spot &#8220;galaxy cluster with bursting heart&#8221;","author":"TopSpacer","date":"September 12, 2015","format":false,"excerpt":"An announcement from the Hubble Space Telescope program. 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