{"id":653,"date":"2023-02-14T10:23:03","date_gmt":"2023-02-14T10:23:03","guid":{"rendered":"https:\/\/website.prod.unilu.spikeseed.cloud\/snt-fr\/news\/capturing-shooting-stars\/"},"modified":"2023-02-14T10:23:03","modified_gmt":"2023-02-14T10:23:03","slug":"capturing-shooting-stars","status":"publish","type":"news","link":"https:\/\/www.uni.lu\/snt-fr\/news\/capturing-shooting-stars\/","title":{"rendered":"Capturing Shooting Stars"},"content":{"rendered":"<section class=\"wp-block-unilux-blocks-free-section section\"><div class=\"container xl:max-w-screen-xl\"><p>It is fascinating to see a streak of light across the sky, and never more so than those times of the year when the meteors fall to earth in such a multitude that they look like sparkling rain. The\u00a0Geminid\u00a0shower is such an event. Our researchers observed such \u201cshooting stars\u201d falling from the sky at their peak in mid-December thanks to cameras newly installed\u00a0on top of\u00a0one of the\u00a0university buildings.<\/p><p>A meteor shower like the Geminids is unique because it is the debris from a comet that existed once upon a time. When a comet comes close to the\u00a0Sun\u00a0and is subjected to a lot of heat, it breaks up\u00a0into\u00a0pieces. These meteoroids orbit the\u00a0Sun\u00a0for a very long\u00a0period.\u00a0\u201cWhen the Earth gets in the path\u00a0of\u00a0meteoroids that\u00a0are circling the\u00a0Sun,\u00a0we see multiple\u00a0meteors, called\u00a0showers. That is why the showers occur every year approximately at the same time,\u201d explained\u00a0<a href=\"https:\/\/wwwfr.uni.lu\/snt\/people\/jan_thoemel\" target=\"_blank\" title=\"\" rel=\"noopener\">Dr. Jan Thoemel<\/a>, who is observing the Geminids.<\/p><p>The University of Luxembourg\u2019s Interdisciplinary Centre for Security, Reliability and Trust (SnT) has two instruments for meteor research. Dr. Thoemel\u00a0used newly installed\u00a0cameras and an antenna to observe the meteors. He operates these installations from\u00a0the SnT\u00a0space observatory laboratory.\u00a0<\/p><p>\u201cThe cameras and the antenna captured a Geminid meteor. We were happy to witness this meteor shower and to share our observations\u00a0with\u00a0the\u00a0NASA network\u201d,\u00a0said Dr. Thoemel.\u00a0<\/p><p>With the newly installed cameras, SnT contributes to an observation network coordinated by the\u00a0<a href=\"https:\/\/www.nasa.gov\/centers\/ames\/about\/index.html\" target=\"_blank\" title=\"\" rel=\"noopener\">NASA Ames research center<\/a>\u00a0and the\u00a0<a href=\"https:\/\/www.seti.org\/\" target=\"_blank\" title=\"\" rel=\"noopener\">SETI institute<\/a>. This network called\u00a0<a href=\"http:\/\/cams.seti.org\/\" target=\"_blank\" title=\"\" rel=\"noopener\">CAMS<\/a>\u00a0is a comprehensive meteor-spotting camera\u00a0network that\u00a0operates\u00a0throughout the world.\u00a0They aim to produce a sky atlas for meteors. With this sky atlas, NASA can determine the location of the meteor showers they are looking for. SnT&rsquo;s contribution to this network is possible thanks to a donation of these cameras from an astronomy enthusiast from Luxembourg, Mr. Schutz.<\/p><p>\u201cThe Geminid shower is already well-known. However, the NASA camera network also aims to explore minor meteor showers. It\u00a0is very fascinating to discover minor meteor showers because this means that there was a comet that broke into\u00a0pieces that\u00a0we did not know about. Such comets are very old. Discovering them and understanding where\u00a0they come\u00a0from can teach us\u00a0a lot\u00a0about our solar system and our galactic\u00a0neighbourhood,\u201d shared Dr. Thoemel.<\/p><p>Meteor observation is also a first step into more research on space sustainability: \u201cIn the future, artificial objects will also\u00a0re-enter Earth&rsquo;s\u00a0atmosphere. For example, SpaceX has thousands of satellites\u00a0in\u00a0orbit. The very same\u00a0observation\u00a0methods that we explore for meteors will help us to understand if satellites will be a danger on Earth when they re-enter,\u201d said Dr. Thoemel.\u00a0<\/p><p>\u201cOur cameras can, in principle, also observe orbiting satellites at dusk and dawn when they reflect sunlight. We brainstorm to determine their trajectories. Such data will be important in the future to manage the expected enormous satellite traffic,\u201d added Dr. Thoemel.<\/p><p><\/p><figure class=\"wp-block-dev4-reusable-blocks-image  object-fit--contain\">\n    \n<img decoding=\"async\" class=\"wp-block-image unilux-custom-image-block\"\n                alt=\"\"\n            src=\"https:\/\/www.uni.lu\/wp-content\/uploads\/sites\/13\/2023\/07\/capturing_shooting_stars_5.png\"\n                srcset=\"https:\/\/www.uni.lu\/wp-content\/uploads\/sites\/13\/2023\/07\/capturing_shooting_stars_5-300x254.png 300w, https:\/\/www.uni.lu\/wp-content\/uploads\/sites\/13\/2023\/07\/capturing_shooting_stars_5.png 468w\"\n                style=\"object-position: 50.00% 50.00%; font-family: &quot;object-fit: contain; object-position: 50.00% 50.00%;&quot;; aspect-ratio: 4\/3; object-fit: contain; width: 100%;\"\n        loading=\"lazy\"\n\/>    <\/figure><p><i>Hardly visible Geminid meteor, photographed by the NASA-networked cameras.<\/i><\/p><p><\/p><p>The NASA-networked cameras are commercial cameras that use software designed for observing meteors. Exploring the sky, they take 25 images per second. Mathematical algorithms detect if there is an unusual light phenomenon in the images. In the end, human operators confirm that the light was a meteor. With the stars in the background they can also determine\u00a0the\u00a0path of the meteor as it moves across the sky.\u00a0The images are then sent to NASA for analysis and confirmation.\u00a0<\/p><figure class=\"wp-block-dev4-reusable-blocks-image  object-fit--contain\">\n    \n<img decoding=\"async\" class=\"wp-block-image unilux-custom-image-block\"\n                alt=\"\"\n            src=\"https:\/\/www.uni.lu\/wp-content\/uploads\/sites\/13\/2023\/07\/capturing_shooting_stars_4.png\"\n                srcset=\"https:\/\/www.uni.lu\/wp-content\/uploads\/sites\/13\/2023\/07\/capturing_shooting_stars_4-300x254.png 300w, https:\/\/www.uni.lu\/wp-content\/uploads\/sites\/13\/2023\/07\/capturing_shooting_stars_4.png 468w\"\n                style=\"object-position: 50.00% 50.00%; font-family: &quot;object-fit: contain; object-position: 50.00% 50.00%;&quot;; aspect-ratio: 4\/3; object-fit: contain; width: 100%;\"\n        loading=\"lazy\"\n\/>    <\/figure><i>Potential Geminid meteor captured by the radio antenna.\u00a0<\/i><p><\/p><p>A radio antenna\u00a0complements\u00a0the meteor observation facilities of SnT. This antenna is\u00a0part of a network of receivers scattered across Belgium, known as the\u00a0<a href=\"https:\/\/brams.aeronomy.be\/\" target=\"_blank\" title=\"\" rel=\"noopener\">Belgian RAdio Meteor Stations<\/a>\u00a0(BRAMS), which is\u00a0led by the\u00a0<a href=\"https:\/\/www.aeronomie.be\/\" target=\"_blank\" title=\"\" rel=\"noopener\">Belgian Institute for Space Aeronomy<\/a>\u00a0(BISA). This is a so-called\u00a0bistatic radar system, where radio signals are transmitted from Belgium into space. Meteors that enter the atmosphere have a high speed of 50 km\/s and burn in the atmosphere.\u00a0When they heat\u00a0up, the\u00a0meteors\u00a0leave behind\u00a0a trail of ions and\u00a0electrons.\u00a0These electrons reflect the radio signal back to Earth.\u00a0The SnT\u00a0antenna also receives these signals\u00a024 hours a day. That\u2019s why SnT can observe meteors day and night.\u00a0<\/p><\/div><\/section>","protected":false},"excerpt":{"rendered":"<p>It is fascinating to see a streak of light across the sky, and never more so than those times of the year when the meteors fall to earth in such a multitude that they look like sparkling rain. The\u00a0Geminid\u00a0shower is such an event. Our researchers observed such \u201cshooting stars\u201d falling from the sky at their peak in mid-December thanks to cameras newly installed\u00a0on top of\u00a0one of the\u00a0university buildings.<\/p>\n","protected":false},"author":0,"featured_media":654,"template":"","format":"standard","meta":{"featured_image_focal_point":[],"show_featured_caption":false,"ulux_newsletter_groups":"","uluxPostTitle":"","uluxPrePostTitle":"","_trash_the_other_posts":false,"_price":"","_stock":"","_tribe_ticket_header":"","_tribe_default_ticket_provider":"","_tribe_ticket_capacity":"0","_ticket_start_date":"","_ticket_end_date":"","_tribe_ticket_show_description":"","_tribe_ticket_show_not_going":false,"_tribe_ticket_use_global_stock":"","_tribe_ticket_global_stock_level":"","_global_stock_mode":"","_global_stock_cap":"","_tribe_rsvp_for_event":"","_tribe_ticket_going_count":"","_tribe_ticket_not_going_count":"","_tribe_tickets_list":"[]","_tribe_ticket_has_attendee_info_fields":false},"news-category":[3],"news-topic":[],"organisation":[183],"authorship":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.3 (Yoast SEO v22.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Capturing Shooting Stars - SnT actualit\u00e9s I Universit\u00e9 du Luxembourg<\/title>\n<meta name=\"description\" content=\"It is fascinating to see a streak of light across the sky, and never more so than those times of the year when the meteors fall to earth in such a multitude that they look like sparkling rain. 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