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class="toggle-button widget-toggle-on"><i class="material-icons">turned_in_not</i></button></li> <li><button class="toggle-button search-toggle-on"><i class="material-icons">search</i></button></li> </ul> <div class="branding"> <a href="https://blogs.esa.int/rocketscience" alt="Home"><img alt="ESA" src="https://blogs.esa.int/rocketscience/wp-content/themes/esablogs2/img/ESA_Logo.svg"></a> </div> </div> <article id="post-5475" class="post-5475 post type-post status-publish format-standard has-post-thumbnail hentry category-cluster-2 category-news-and-updates tag-cluster-reentry tag-operations tag-salsa tag-space-debris-2 tag-space-safety tag-sustainability"> <section class="post-cover bg-cover display-table" style="background-image:url('https://blogs.esa.int/rocketscience/files/2024/08/Cluster_satellite_reentering_Earth_s_atmosphere-scaled.jpg');"> <div class="dimmed display-cell text-middle"> <div class="container"> <h1 class="post-title">Cluster reentry (Salsa) – homepage</h1> </div> </div> </section> <section class="post-wrapper"> <div class="post-main clearfix"> <ul class="post-meta-mini"> <li class="post-meta meta-date"> <i class="material-icons md-24">access_time</i> 23/08/2024 </li> <li class="post-meta meta-time"> <i class="material-icons md-24">timer</i> 1' </li> <li class="post-meta meta-comments"> <i class="material-icons md-24">chat_bubble_outline</i> 0 comments </li> </ul> <div class="post-content"> <div class="post-excerpt">On 8 September 2024, the first of the four satellites that make up ESA’s Cluster mission will reenter Earth’s atmosphere over the South Pacific Ocean Uninhabited Area.</div> <p>The reentry marks the end of <a href="https://www.esa.int/Science_Exploration/Space_Science/Cluster/Cluster_mission_set_to_end_with_reentry_over_South_Pacific">the historic scientific mission</a>, which has spent more than 24 years measuring Earth’s magnetic environment.</p> <p>Of the four Cluster satellites – nicknamed Rumba (Cluster 1), Salsa (Cluster 2), Samba (Cluster 3) and Tango (Cluster 4) – Salsa will be the first to take the plunge.</p> <p>In January 2024, the Cluster control team <a href="https://www.esa.int/Enabling_Support/Operations/Salsa_s_last_dance_targets_reentry_over_South_Pacific">manoeuvred Salsa</a> to target its reentry over a very sparsely populated and remote area in the South Pacific Ocean, to the west of Chile. The satellite will reenter on 8 September without any further assistance.</p> <p>This is the first time that a ‘<a href="https://www.esa.int/Science_Exploration/Space_Science/Cluster/Frequently_asked_questions_Cluster_s_Salsa_reentry#:~:text=What%20is%20a%20%E2%80%98targeted%20reentry%E2%80%99%3F%C2%A0">targeted reentry</a>’ has been attempted for a satellite in a highly eccentric orbit like Salsa’s and is part of ESA’s ongoing efforts to dispose of its older missions in more safe and sustainable ways than were thought possible at the time of their design.</p> <figure class="wp-block-image size-large"><img fetchpriority="high" decoding="async" width="1024" height="576" src="https://blogs.esa.int/rocketscience/files/2024/08/Infographics_Cluster_reentry_Plane_FINAL-1024x576.jpg" alt="" class="wp-image-5486" srcset="https://blogs.esa.int/rocketscience/files/2024/08/Infographics_Cluster_reentry_Plane_FINAL-1024x576.jpg 1024w, https://blogs.esa.int/rocketscience/files/2024/08/Infographics_Cluster_reentry_Plane_FINAL-350x197.jpg 350w, https://blogs.esa.int/rocketscience/files/2024/08/Infographics_Cluster_reentry_Plane_FINAL-768x432.jpg 768w, https://blogs.esa.int/rocketscience/files/2024/08/Infographics_Cluster_reentry_Plane_FINAL-1536x864.jpg 1536w, https://blogs.esa.int/rocketscience/files/2024/08/Infographics_Cluster_reentry_Plane_FINAL-2048x1152.jpg 2048w" sizes="(max-width: 1024px) 100vw, 1024px" /></figure> <p>The end of the Cluster mission also offers a rare chance to study the reentries of four identical satellites at different times and under different conditions. The resulting data will improve our understanding of atmospheric reentry and inform the design of <a href="https://www.esa.int/Space_Safety/Time_to_build_zero-debris_satellites">‘zero-debris’ satellites</a>.</p> <p>To find out more about the reentry and what we hope to learn from the end of the Cluster mission, see our <a href="https://www.esa.int/Science_Exploration/Space_Science/Cluster/Frequently_asked_questions_Cluster_s_Salsa_reentry">frequently asked questions</a> page.</p> <p><strong><a href="https://blogs.esa.int/rocketscience/">Follow this blog for updates</a></strong>. We will also be sharing updates on <a href="https://x.com/ESA_Cluster">@esa_Cluster</a>, <a href="https://x.com/esaoperations">@esaoperations</a> and <a href="https://x.com/esascience">@esascience</a> on X, as well as on the <a href="https://www.linkedin.com/company/esa-operations/">ESA Operations</a> and <a href="https://www.linkedin.com/showcase/esa-space-safety/">ESA Space Safety</a> LinkedIn pages.</p> </div> <div class="post-sidebar"> <div class="post-meta author-bio"> <img width="200" height="200" src="https://blogs.esa.int/rocketscience/files/2024/01/ESA_Avatar_EnlightYellow-300x300.png" class="avatar avatar-200 photo" alt="" decoding="async" srcset="https://blogs.esa.int/rocketscience/files/2024/01/ESA_Avatar_EnlightYellow-300x300.png 300w, https://blogs.esa.int/rocketscience/files/2024/01/ESA_Avatar_EnlightYellow-350x350.png 350w, https://blogs.esa.int/rocketscience/files/2024/01/ESA_Avatar_EnlightYellow-24x24.png 24w, https://blogs.esa.int/rocketscience/files/2024/01/ESA_Avatar_EnlightYellow-48x48.png 48w, https://blogs.esa.int/rocketscience/files/2024/01/ESA_Avatar_EnlightYellow-96x96.png 96w, https://blogs.esa.int/rocketscience/files/2024/01/ESA_Avatar_EnlightYellow-150x150.png 150w, https://blogs.esa.int/rocketscience/files/2024/01/ESA_Avatar_EnlightYellow.png 512w" sizes="(max-width: 200px) 100vw, 200px" /> <div class="author-info"> <p class="author-title">Written by<br><span>Josh</span></p> <p class="author-description"></p> <ul class="author-icons list-inline"> </ul> </div> </div> <div class="post-meta meta-date"> <i class="material-icons md-24">access_time</i> 23 August 2024 </div> <div class="post-meta meta-time"> <i class="material-icons md-24">timer</i> 1 minute reading </div> <div class="post-meta meta-comments"> <i class="material-icons md-24">chat_bubble_outline</i> 0 comments </div> <div class="post-meta meta-category"> <i class="material-icons md-24">format_list_bulleted</i> <ul class="post-categories"> <li><a href="https://blogs.esa.int/rocketscience/category/cluster-2/" rel="category tag">Cluster</a></li> <li><a href="https://blogs.esa.int/rocketscience/category/news-and-updates/" rel="category tag">News & updates</a></li></ul> </div> </div> <div class="post-comments"> <h2>Discussion: <small>no comments</small></h2> <ul class="commentlist"> </ul> </div> </div> <section class="widget-area"> <div class="container"> <div class="row"> <div class="col-xs-12 col-sm-4"> <div id="recent-posts-2" class="widget widget_recent_entries"> <h5 class="widget-title">Recent Posts</h5> <ul> <li> <a href="https://blogs.esa.int/rocketscience/2025/02/19/2024-yr4-surpasses-apophis-as-riskiest-asteroid-ever-detected/">2024 YR4 surpasses Apophis as ‘riskiest’ asteroid ever detected</a> </li> <li> <a href="https://blogs.esa.int/rocketscience/2025/02/10/james-webb-space-telescope-will-study-asteroid-2024-yr4/">James Webb Space Telescope will study asteroid 2024 YR4</a> </li> <li> <a href="https://blogs.esa.int/rocketscience/2025/02/06/2024-yr4-flyby-geometry-or-1-8-of-what/">2024 YR4 flyby geometry, or 1.8% of What?</a> </li> <li> <a href="https://blogs.esa.int/rocketscience/2025/02/04/asteroid-2024-yr4-latest-updates/">Asteroid 2024 YR4 – latest updates</a> </li> <li> <a href="https://blogs.esa.int/rocketscience/2024/10/28/solar-orbiter-phones-home-via-commercial-deep-space-antenna/">Solar Orbiter phones home via commercial deep space antenna</a> </li> </ul> </div><div id="archives-2" class="widget widget_archive"><h5 class="widget-title">Archives</h5> <label class="screen-reader-text" for="archives-dropdown-2">Archives</label> <select id="archives-dropdown-2" name="archive-dropdown"> <option value="">Select Month</option> <option value='https://blogs.esa.int/rocketscience/2025/02/'> February 2025 </option> <option value='https://blogs.esa.int/rocketscience/2024/10/'> October 2024 </option> <option value='https://blogs.esa.int/rocketscience/2024/09/'> September 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/* ]]> */ </script> </div> </div> <div class="col-xs-12 col-sm-4"> <div id="recent-comments-2" class="widget widget_recent_comments"><h5 class="widget-title">Recent Comments</h5><ul id="recentcomments"><li class="recentcomments"><span class="comment-author-link">Stephen Blackstone</span> on <a href="https://blogs.esa.int/rocketscience/2025/02/04/asteroid-2024-yr4-latest-updates/#comment-84380">Asteroid 2024 YR4 – latest updates</a></li><li class="recentcomments"><span class="comment-author-link">Kevin Heider</span> on <a href="https://blogs.esa.int/rocketscience/2025/02/19/2024-yr4-surpasses-apophis-as-riskiest-asteroid-ever-detected/#comment-84379">2024 YR4 surpasses Apophis as ‘riskiest’ asteroid ever detected</a></li><li class="recentcomments"><span class="comment-author-link">Michael Grundler</span> on <a href="https://blogs.esa.int/rocketscience/2025/02/19/2024-yr4-surpasses-apophis-as-riskiest-asteroid-ever-detected/#comment-84378">2024 YR4 surpasses Apophis as ‘riskiest’ asteroid ever detected</a></li><li class="recentcomments"><span class="comment-author-link">Stefania</span> on <a href="https://blogs.esa.int/rocketscience/2025/02/04/asteroid-2024-yr4-latest-updates/#comment-84377">Asteroid 2024 YR4 – latest updates</a></li><li class="recentcomments"><span class="comment-author-link">Matt Bampton</span> on <a href="https://blogs.esa.int/rocketscience/2025/02/04/asteroid-2024-yr4-latest-updates/#comment-84376">Asteroid 2024 YR4 – latest updates</a></li></ul></div><div id="tag_cloud-2" class="widget widget_tag_cloud"><h5 class="widget-title">Tags</h5><div class="tagcloud"><a href="https://blogs.esa.int/rocketscience/tag/lisapathfinder/" class="tag-cloud-link tag-link-609 tag-link-position-1" style="font-size: 12pt;" aria-label="#LISAPathfinder (12 items)">#LISAPathfinder</a> <a href="https://blogs.esa.int/rocketscience/tag/aerobraking/" class="tag-cloud-link tag-link-372 tag-link-position-2" style="font-size: 17.692307692308pt;" aria-label="aerobraking 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