{"id":243919,"date":"2022-11-11T16:00:00","date_gmt":"2022-11-11T16:00:00","guid":{"rendered":"https:\/\/www.unistellar.com\/blog\/la-communaute-unistellar-contribue-a-ameliorer-une-mission-de-la-nasa\/"},"modified":"2022-11-14T10:26:50","modified_gmt":"2022-11-14T10:26:50","slug":"la-communaute-unistellar-contribue-a-ameliorer-une-mission-de-la-nasa","status":"publish","type":"blog","link":"https:\/\/www.unistellar.com\/fr\/blog\/la-communaute-unistellar-contribue-a-ameliorer-une-mission-de-la-nasa\/","title":{"rendered":"La Communaut\u00e9 Unistellar Contribue \u00e0 Am\u00e9liorer une Mission de la NASA"},"content":{"rendered":"

[et_pb_section fb_built=\u00a0\u00bb1″ _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb background_color=\u00a0\u00bbgcid-579abc80-458a-43b5-90b5-efa821d39207″ custom_padding=\u00a0\u00bb4px||0px|||\u00a0\u00bb global_colors_info=\u00a0\u00bb{%22gcid-579abc80-458a-43b5-90b5-efa821d39207%22:%91%22background_color%22%93}\u00a0\u00bb][et_pb_row _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4″ _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][dsm_breadcrumbs _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/dsm_breadcrumbs][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=\u00a0\u00bb1″ _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb background_color=\u00a0\u00bbgcid-579abc80-458a-43b5-90b5-efa821d39207″ global_colors_info=\u00a0\u00bb{%22gcid-579abc80-458a-43b5-90b5-efa821d39207%22:%91%22background_color%22%93}\u00a0\u00bb][et_pb_row _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4″ _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]En participant massivement \u00e0 l\u2019une des plus grandes chasses \u00e0 l\u2019ombre d’ast\u00e9ro\u00efdes jamais organis\u00e9e, la communaut\u00e9 Unistellar a permis de r\u00e9aliser des d\u00e9couvertes notables concernant l\u2019ast\u00e9ro\u00efde Eurybates, le premier ast\u00e9ro\u00efde qui sera visit\u00e9 par la sonde Lucy de la NASA. Ces r\u00e9sultats exceptionnels, obtenus gr\u00e2ce aux programmes de science participative d\u2019Unistellar, ont \u00e9t\u00e9 pr\u00e9sent\u00e9s le 11 novembre par Franck Marchis, directeur scientifique d\u2019Unistellar et astronome professionnel au SETI Institute, \u00e0 l\u2019occasion des Rencontres Ciel & Espace, une conf\u00e9rence majeure d\u2019astronomie qui s\u2019est d\u00e9roul\u00e9e \u00e0 Paris.[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=\u00a0\u00bb3_5,2_5″ make_equal=\u00a0\u00bbon\u00a0\u00bb _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb custom_css_main_element=\u00a0\u00bbdisplay: flex;||flex-direction: row;||align-items: center;\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb3_5″ _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]Le 23 octobre \u00e0 4h00, heure de Paris, 320 astronomes amateurs d\u2019Europe ont point\u00e9 leur t\u00e9lescope vers Eurybates en guettant une occultation, autrement dit l\u2019instant o\u00f9 l\u2019ast\u00e9ro\u00efde passerait devant une \u00e9toile distante. Parmi le groupe d\u2019observateurs mobilis\u00e9s pour l’occasion par l\u2019Association Fran\u00e7aise d’Astronomie (AFA), se trouvaient 31 membres du r\u00e9seau Unistellar \u00e9quip\u00e9s de leurs eVscopes, qui ont transmis leurs donn\u00e9es aux astronomes du SETI Institute pour qu\u2019elles soient analys\u00e9es. Avec d\u2019autres scientifiques, ils ont pu discerner des d\u00e9tails subtils dans l\u2019ombre de l’ast\u00e9ro\u00efde, et ainsi affiner la mod\u00e9lisation d\u2019Eurybates.[\/et_pb_text][\/et_pb_column][et_pb_column type=\u00a0\u00bb2_5″ _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/www.unistellar.com\/wp-content\/uploads\/2022\/10\/ezgif.com-gif-maker-1-1.gif\u00a0\u00bb title_text=\u00a0\u00bbezgif.com-gif-maker-1-1″ _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb border_radii=\u00a0\u00bbon|11px|11px|11px|11px\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4″ _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]\u00ab Les observations combin\u00e9es de 18 occultations positives r\u00e9v\u00e8lent que l\u2019ast\u00e9ro\u00efde Eurybates pr\u00e9sente une forme complexe caract\u00e9ris\u00e9e par des concavit\u00e9s qui sugg\u00e8rent l\u2019existence de vastes crat\u00e8res, \u00bb explique Franck Marchis.[\/et_pb_text][et_pb_image src=\u00a0\u00bbhttps:\/\/www.unistellar.com\/wp-content\/uploads\/2022\/11\/before-after-eurybates-scaled.jpg\u00a0\u00bb title_text=\u00a0\u00bbbefore after eurybates\u00a0\u00bb _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb border_radii=\u00a0\u00bbon|11px|11px|11px|11px\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_image][et_pb_text _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n

Du ballon \u00e0 la cacahu\u00e8te?<\/h4>\n

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Du fait de ces concavit\u00e9s, la forme d\u2019Eurybates semble dor\u00e9navant plus proche de celle d\u2019une cacahu\u00e8te que de celle d\u2019un ballon<\/strong>, comme les astronomes le pensaient auparavant. Ce sont des informations essentielles pour la mission Lucy, qui visitera Eurybates en 2027 dans le cadre de sa mission vers les ast\u00e9ro\u00efdes troyens, ces objets qui suivent l\u2019orbite de Jupiter autour du Soleil. Ces ast\u00e9ro\u00efdes, dont la formation remonte aux premiers temps de notre syst\u00e8me solaire, n\u2019ont encore jamais \u00e9t\u00e9 \u00e9tudi\u00e9s de pr\u00e8s. Par cons\u00e9quent, la mission Lucy pourrait non seulement r\u00e9v\u00e9ler de nouvelles informations au sujet de la formation des ast\u00e9ro\u00efdes, mais aussi sur la fa\u00e7on dont le syst\u00e8me solaire lui-m\u00eame a \u00e9t\u00e9 cr\u00e9\u00e9.<\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=\u00a0\u00bb1_2,1_2″ make_equal=\u00a0\u00bbon\u00a0\u00bb _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb custom_css_main_element=\u00a0\u00bbdisplay: flex;||flex-direction: row;||align-items: center;\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb1_2″ _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]Les astronomes citoyens d\u2019Unistellar vont poursuivre leurs observations du ciel nocturne au cours des prochaines ann\u00e9es pour accompagner Lucy dans son voyage jusqu\u2019aux Troyens. D\u2019autres occasions d\u2019observer ces ast\u00e9ro\u00efdes pourraient bient\u00f4t se pr\u00e9senter, alors informez-vous r\u00e9guli\u00e8rement pour avoir la chances d’y participer ![\/et_pb_text][\/et_pb_column][et_pb_column type=\u00a0\u00bb1_2″ _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/www.unistellar.com\/wp-content\/uploads\/2022\/11\/Screenshot-2022-11-10-at-15.54.15.png\u00a0\u00bb title_text=\u00a0\u00bbScreenshot 2022-11-10 at 15.54.15″ _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb border_radii=\u00a0\u00bbon|11px|11px|11px|11px\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4″ _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/www.unistellar.com\/wp-content\/uploads\/2022\/11\/736004a9-581d-44eb-8c27-079d210eaa4f.jpeg\u00a0\u00bb _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb title_text=\u00a0\u00bb736004a9-581d-44eb-8c27-079d210eaa4f\u00a0\u00bb border_radii=\u00a0\u00bbon|11px|11px|11px|11px\u00a0\u00bb hover_enabled=\u00a0\u00bb0″ sticky_enabled=\u00a0\u00bb0″][\/et_pb_image][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=\u00a0\u00bb1″ _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb background_color=\u00a0\u00bbgcid-929a6719-4323-4702-bd5a-fabceb4433c2″ global_colors_info=\u00a0\u00bb{%22gcid-929a6719-4323-4702-bd5a-fabceb4433c2%22:%91%22background_color%22%93}\u00a0\u00bb][et_pb_row _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4″ _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n

Further readings<\/h2>\n

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