{"id":5475,"date":"2013-11-29T17:43:48","date_gmt":"2013-11-29T17:43:48","guid":{"rendered":"http:\/\/hobbyspace.com\/Blog\/?p=5475"},"modified":"2013-11-29T17:43:48","modified_gmt":"2013-11-29T17:43:48","slug":"ison-the-die-hard-comet","status":"publish","type":"post","link":"https:\/\/hobbyspace.com\/Blog\/?p=5475","title":{"rendered":"ISON – The die hard comet"},"content":{"rendered":"

Evidence is growing that a part of the Comet ISON nucleus did in fact survive its close solar experience (see previous posting<\/a>). Here is a report from NASA:<\/p>\n

Comet ISON May Have Survived<\/a><\/strong><\/p>\n

Continuing a history of surprising behavior, material from Comet ISON appeared on the other side of the sun on the evening on Nov. 28, 2013, despite not having been seen in observations during its closest approach to the sun.<\/p>\n

\n
\"\"<\/a><\/div>\n<\/div>\n
\n
\n
This movie shows Comet ISON orbiting around the sun \u2013 represented by the white <\/em>
\ncircle — on Nov. 28, 2013. ISON looks smaller as it streams away, but scientists <\/em>
\nbelieve its nucleus may still be intact. The video covers Nov. 27, 2013, 3:30 p.m. ET<\/em>
\n to Nov. 29, 2013, 8:30 a.m. ET. Image Credit:\u00a0ESA\/NASA\/SOHO\/Jhelioviewer<\/em><\/div>\n<\/div>\n<\/div>\n

As ISON appeared to dim and fizzle in several observatories and later could not be seen at all by NASA’s Solar Dynamics Observatory or by ground based solar observatories, many scientists believed it had disintegrated completely. However, a streak of bright material streaming away from the sun appeared in the European Space Agency and NASA’s Solar and Heliospheric Observatory later in the evening. The question remains whether it is merely debris from the comet, or if some portion of the comet’s nucleus survived, but late-night analysis from scientists with NASA’s Comet ISON Observing Campaign suggest that there is at least a small nucleus intact.<\/p>\n

\n
\"Three<\/a><\/div>\n<\/div>\n
\n
\n
ISON appears as a white smear heading up and away from the sun. ISON was <\/em>
\nnot visible\u00a0during its closest approach to the sun, so many scientists thought <\/em>
\nit had disintegrated, but images like this one from the ESA\/NASA Solar and <\/em>
\nHeliospheric Observatory suggest that a small nucleus may be intact.<\/em><\/div>\n<\/div>\n<\/div>\n
\n
Image Credit:\u00a0ESA\/NASA\/SOHO\/GSFC<\/em><\/div>\n
<\/div>\n
Continuing a history of surprising behavior, material from Comet ISON appeared on the other side of the sun on the evening on Nov. 28, 2013, despite not having been seen in observations during its closest approach to the sun.<\/div>\n
\n

As ISON appeared to dim and fizzle in several observatories and later could not be seen at all by NASA’s Solar Dynamics Observatory or by ground based solar observatories, many scientists believed it had disintegrated completely. However, a streak of bright material streaming away from the sun appeared in the European Space Agency and NASA’s Solar and Heliospheric Observatory later in the evening. The question remains whether it is merely debris from the comet, or if some portion of the comet’s nucleus survived, but late-night analysis from scientists with NASA’s Comet ISON Observing Campaign suggest that there is at least a small nucleus intact.<\/p>\n

\n
\"A<\/a><\/div>\n<\/div>\n
\n
\n
Another view from SOHO’s C2 chronograph shows Comet ISON appearing <\/em>
\nbright as it streams toward the sun (right). it can be seen as a dim streak <\/em>
\nheading upward and out in the left image. The comet may still be intact.<\/em><\/div>\n<\/div>\n<\/div>\n
\n
Image Credit:\u00a0ESA\/NASA\/SOHO\/Jhelioviewer<\/em><\/div>\n
\n

Throughout the year that researchers have watched Comet ISON \u2013 and especially during its final approach to the sun \u2013 the comet brightened and dimmed in unexpected ways.\u00a0 Such brightness changes usually occur in response to material boiling off the comet, and different material will do so at different temperatures thus providing clues as to what the comet is made of.\u00a0 Analyzing this pattern will help scientists understand the composition of ISON, which contains material assembled during the very formation of the solar system some 4.5 billion years ago.<\/p>\n

Related Links:<\/strong><\/p>\n

For more information on Comet ISON:\u00a0www.nasa.gov\/ison<\/a><\/p>\n

To download recent ISON imagery:\u00a0http:\/\/svs.gsfc.nasa.gov\/Gallery\/CometISON.html<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Evidence is growing that a part of the Comet ISON nucleus did in fact survive its close solar experience (see previous posting). Here is a report from NASA: Comet ISON May Have Survived Continuing a history of surprising behavior, material from Comet ISON appeared on the other side of the sun on the evening on … Continue reading ISON – The die hard comet<\/span> →<\/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":[12,37,31],"tags":[],"class_list":["post-5475","post","type-post","status-publish","format-standard","hentry","category-astronomy","category-events","category-solar-science"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p34aWK-1qj","jetpack-related-posts":[{"id":5469,"url":"https:\/\/hobbyspace.com\/Blog\/?p=5469","url_meta":{"origin":5475,"position":0},"title":"Comet ISON swings around the sun [Update]","author":"TopSpacer","date":"November 28, 2013","format":false,"excerpt":"The\u00a0Comet ISON\u00a0 swung behind the Sun today. Initial reports were that it did not survive its close encounter with the big heat but others are now saying that there appears to be a small object that remains on the same trajectory. Will watch for updates. [ Update 1:10 am Nov.29.13:\u2026","rel":"","context":"In "Astronomy"","block_context":{"text":"Astronomy","link":"https:\/\/hobbyspace.com\/Blog\/?cat=12"},"img":{"alt_text":"ISON approaches the Sun as seen from SOHO LASCO C3 (Nov 28, 2013)","src":"https:\/\/i0.wp.com\/planetary.s3.amazonaws.com\/assets\/images\/9-small-bodies\/2013\/20131128_ison_lasco-c3_20131128_1537_c3_1024.gif?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":5428,"url":"https:\/\/hobbyspace.com\/Blog\/?p=5428","url_meta":{"origin":5475,"position":1},"title":"Comet ISON update – Swinging around the sun, Images from NASA spacecraft, and more","author":"TopSpacer","date":"November 26, 2013","format":false,"excerpt":"As mentioned earlier,\u00a0Comet ISON\u00a0has brightened considerably as it has gotten closer to the sun. It will go behind the sun on November 28th and there is great interest in how the comet will be affected by this closest encounter to the sun's intense heat. Don Yeomans, manager of NASA's Near-Earth\u2026","rel":"","context":"In "Astronomy"","block_context":{"text":"Astronomy","link":"https:\/\/hobbyspace.com\/Blog\/?cat=12"},"img":{"alt_text":"figure2_messenger_ison[1]","src":"https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2013\/11\/figure2_messenger_ison1.png?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":5512,"url":"https:\/\/hobbyspace.com\/Blog\/?p=5512","url_meta":{"origin":5475,"position":2},"title":"The ISON story continues","author":"TopSpacer","date":"December 3, 2013","format":false,"excerpt":"The latest on comet ISON: NASA Investigating the Life of Comet ISON After several days of continued observations, scientists continue to work to determine and to understand the fate of Comet ISON: There's no doubt that the comet shrank in size considerably as it rounded the sun and there's no\u2026","rel":"","context":"In "Asteroids & Comets"","block_context":{"text":"Asteroids & Comets","link":"https:\/\/hobbyspace.com\/Blog\/?cat=75"},"img":{"alt_text":"Comet ISON comes in from the bottom right and moves out toward the upper right, getting fainter and fainter.","src":"https:\/\/i0.wp.com\/www.nasa.gov\/sites\/default\/files\/styles\/673xvariable_height\/public\/soho_c3_timelapse_new_0.jpeg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":5237,"url":"https:\/\/hobbyspace.com\/Blog\/?p=5237","url_meta":{"origin":5475,"position":3},"title":"Comet ISON starting to light up","author":"TopSpacer","date":"November 10, 2013","format":false,"excerpt":"Comet ISON is brightening up enough to see it with binoculars:\u00a0Spaceweather.com - Nov.9.13\u00a0- COMET ISON NOW A BINOCULAR OBJECT:\u00a0Comet ISON is brightening as it approaches the sun. Multiple observers now report that it is a binocular object. \"I finally saw Comet ISON for the first time using small binoculars!\" says\u2026","rel":"","context":"In "Astronomy"","block_context":{"text":"Astronomy","link":"https:\/\/hobbyspace.com\/Blog\/?cat=12"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":5274,"url":"https:\/\/hobbyspace.com\/Blog\/?p=5274","url_meta":{"origin":5475,"position":4},"title":"Comets ISON and Lovejoy in timelapse video","author":"TopSpacer","date":"November 13, 2013","format":false,"excerpt":"Photographer\u00a0Justin Ng\u00a0created these\u00a0timelapse sequences of Comet ISON and Comet Lovejoy\u00a0images (via\u00a0Universe Today). 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