{"id":16528,"date":"2019-03-20T18:53:02","date_gmt":"2019-03-20T17:53:02","guid":{"rendered":"https:\/\/www.asi.it\/?page_id=16528"},"modified":"2020-04-09T12:42:51","modified_gmt":"2020-04-09T10:42:51","slug":"dawn","status":"publish","type":"page","link":"https:\/\/www.asi.it\/en\/planets-stars-universe\/solar-system-and-beyond\/dawn\/","title":{"rendered":"DAWN"},"content":{"rendered":"<p class=\"p1\"><span class=\"s1\"><strong>Subject line<\/strong>: minor bodies of the Solar System<\/span><\/p>\r\n<p class=\"p1\"><span class=\"s1\"><strong>Responsibility of the mission<\/strong>: NASA<\/span><\/p>\r\n<p class=\"p1\"><span class=\"s1\"><strong>Date of launch<\/strong>: September 27<\/span><span class=\"s2\"><sup>th<\/sup><\/span><span class=\"s1\">, 2017 \u2013 November 2018<\/span><\/p>\r\n&nbsp;\r\n<p class=\"p1\"><strong><span class=\"s1\">Description<\/span><\/strong><\/p>\r\n<p class=\"p1\"><span class=\"s1\">The<a href=\"https:\/\/solarsystem.nasa.gov\/missions\/dawn\/overview\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Dawn<\/a> mission was selected by the NASA on December 21<\/span><span class=\"s2\"><sup>st<\/sup><\/span><span class=\"s1\">, 2001, in the framework of the Discovery Programme.<\/span><\/p>\r\n<p class=\"p1\"><span class=\"s1\">After the launch on September 27<\/span><span class=\"s2\"><sup>th<\/sup><\/span><span class=\"s1\">, 2007, the probe performed a gravity assist manoeuvre with Mars in February 2009, then headed towards Vesta and reached it in August 2011. <\/span><\/p>\r\n<p class=\"p1\"><span class=\"s1\">Following the insertion manoeuvre in its orbit, the probe studied Vesta until the month of September 2012, then headed towards Ceres and reached it in Mars 2015.<\/span><\/p>\r\n<p class=\"p1\"><span class=\"s1\">Dawn was the only space vehicle to orbit around two different celestial bodies in the deep space: the asteroid Vesta and the dwarf planet Ceres. Their study provided several indications on the formation of the Solar System. During its long journey to approach the two objectives, Dawn also performed a flyby of Mars. <\/span><\/p>\r\n&nbsp;\r\n<p class=\"p1\"><strong><span class=\"s1\">Scientific goals <\/span><\/strong><\/p>\r\n<p class=\"p1\"><span class=\"s1\">The mission is ideally positioned in between the exploration of the internal rocky Solar System and the external gaseous Solar System. It completes the exploration of the Solar System, since it\u2019s complementary to current and future missions on Mercury, Venus, Earth and Mars; in particular, it will improve our knowledge of the role and importance of water in planetary evolution. <\/span><\/p>\r\n<p class=\"p1\"><span class=\"s1\">The main scientific goals of the mission are gathering information on the conditions in force during the initial stages of the evolution of the Solar System, i.e. on the first millions of years in its evolution, and on the process in play on the newly-formed bodies; characterising the \u201cbricks\u201d from which the terrestrial planets formed, increasing our knowledge of this process of formation.<\/span><\/p>\r\n<p class=\"p1\"><span class=\"s1\">Ceres is very primitive and preserves traces of water, unlike other minor planets; furthermore it has a tenuous, but permanent, atmosphere. Unlike Ceres, Vesta is evolved and dry and is the only asteroid showing noticeable signs of a complex thermal evolution, similar to the terrestrial planets. <\/span><\/p>\r\n<p class=\"p1\"><span class=\"s1\">To reach its scientific goals, Dawn characterises asteroids in terms of their shape and some physical properties (size, shape, mass, period and rotation axis), by assessing their morphological characteristics (local structures, crater distribution, the presence or not of regolith) in order to determine the geological and mineralogical nature of the surface. To this aim, Dawn is equipped with 3 instruments capable of observing electromagnetic emissions on a broad spectrum: from gamma-ray emissions to visible region and thermal infrared. Furthermore, radio waves are used to perform gravitational measurements by using the onboard communication systems.<\/span><\/p>\r\n&nbsp;\r\n<p class=\"p1\"><strong><span class=\"s1\">Italian contribution<\/span><\/strong><\/p>\r\n<p class=\"p1\"><span class=\"s1\">The Italian participation in the mission consists in providing an imaging spectrometer operating in the visible region and in the near infrared with a high spatial and spectral resolution, to carry out the hyperspectral mapping of asteroids: the VIR-MS \u201cVisible-IR Mapping Spectrometer\u201d, derived from the VIRTIS instrument aboard the Rosetta mission, was built by the Selex Es in Florence. Furthermore, Italy will provide the manpower to the Dawn Project Team at the JPL\/UCLA for in-flight operations.<\/span><\/p>\r\n&nbsp;\r\n<p class=\"p1\"><strong><span class=\"s1\">International agreements <\/span><\/strong><\/p>\r\n<p class=\"p1\"><span class=\"s1\">On December 19<\/span><span class=\"s2\"><sup>th<\/sup><\/span><span class=\"s1\">, 2003, the cooperation agreement between the ASI and the NASA to carry out the Dawn mission was formalized by signing a Letter of Agreement.\u00a0 <\/span><span class=\"s1\">Subsequently, a Memorandum of Agreement between the NASA and the ASI was signed and came into force on July 6<\/span><span class=\"s2\"><sup>th<\/sup><\/span><span class=\"s1\">, 2007.<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>Subject line: minor bodies of the Solar System Responsibility of the mission: NASA Date of launch: September 27th, 2017 \u2013 November 2018 &nbsp; Description The Dawn mission was selected by [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":2588,"parent":16481,"menu_order":465,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","footnotes":""},"categories":[],"tags":[],"class_list":["post-16528","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.9 (Yoast SEO v25.9) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>DAWN - ASI<\/title>\n<meta name=\"description\" content=\"Subject line: minor bodies of the Solar System Responsibility of the mission: NASA Date of launch: September 27th, 2017 \u2013 November 2018 &nbsp; Description\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.asi.it\/en\/planets-stars-universe\/solar-system-and-beyond\/dawn\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"DAWN\" \/>\n<meta property=\"og:description\" content=\"%\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.asi.it\/en\/planets-stars-universe\/solar-system-and-beyond\/dawn\/\" \/>\n<meta property=\"og:site_name\" content=\"ASI\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/agenziaspazialeitaliana\" \/>\n<meta property=\"article:modified_time\" content=\"2020-04-09T10:42:51+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.asi.it\/wp-content\/uploads\/2019\/03\/dawn-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1440\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@ASI_spazio\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.asi.it\/en\/planets-stars-universe\/solar-system-and-beyond\/dawn\/\",\"url\":\"https:\/\/www.asi.it\/en\/planets-stars-universe\/solar-system-and-beyond\/dawn\/\",\"name\":\"DAWN - ASI\",\"isPartOf\":{\"@id\":\"https:\/\/www.asi.it\/en\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.asi.it\/en\/planets-stars-universe\/solar-system-and-beyond\/dawn\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.asi.it\/en\/planets-stars-universe\/solar-system-and-beyond\/dawn\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.asi.it\/wp-content\/uploads\/2019\/03\/dawn-scaled.jpg\",\"datePublished\":\"2019-03-20T17:53:02+00:00\",\"dateModified\":\"2020-04-09T10:42:51+00:00\",\"description\":\"Subject line: minor bodies of the Solar System Responsibility of the mission: NASA Date of launch: September 27th, 2017 \u2013 November 2018 &nbsp; 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