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#planetarydefence

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Soh Kam Yung<p>"If one day an asteroid like Dimorphos is discovered to be headed toward Earth, an interceptor craft like DART could collide with the asteroid years in advance to avert disaster. Here’s how that might work."</p><p><a href="https://spectrum.ieee.org/planetary-defense-killer-asteroids" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">spectrum.ieee.org/planetary-de</span><span class="invisible">fense-killer-asteroids</span></a></p><p><a href="https://mstdn.io/tags/Asteroids" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Asteroids</span></a> <a href="https://mstdn.io/tags/Dart" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Dart</span></a> <a href="https://mstdn.io/tags/Space" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Space</span></a> <a href="https://mstdn.io/tags/PlanetaryDefence" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PlanetaryDefence</span></a></p>
Astro Hawk (Ian Kluft) ✅🚀🛰️<p>An impact of <a href="https://spacey.space/tags/asteroid" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>asteroid</span></a> <a href="https://spacey.space/tags/2024YR4" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>2024YR4</span></a> on the <a href="https://spacey.space/tags/Moon" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Moon</span></a> could be visible from Earth, if it impacts the side that faces us. Additional hazards not mentioned in articles I've seen so far would affect planning for <a href="https://spacey.space/tags/NASA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>NASA</span></a> <a href="https://spacey.space/tags/Artemis" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Artemis</span></a> landing missions and Lunar Gateway space station (not yet launched). Some ejecta/debris from the impact would leave the Moon's weak gravity and could threaten Earth or our satellites weeks or months after impact. <a href="https://spacey.space/tags/astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astronomy</span></a> <a href="https://spacey.space/tags/PlanetaryDefense" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PlanetaryDefense</span></a> <a href="https://spacey.space/tags/PlanetaryDefence" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PlanetaryDefence</span></a> <a href="https://spacey.space/tags/LowFlyingRocks" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>LowFlyingRocks</span></a> <a href="https://spacey.space/tags/space" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>space</span></a></p>
Astro Hawk (Ian Kluft) ✅🚀🛰️<p>"Asteroid will miss Earth — but may set off lunar light show" by <span class="h-card" translate="no"><a href="https://mastodon.online/@cosmiclog" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>cosmiclog</span></a></span> / <span class="h-card" translate="no"><a href="https://mastodon.social/@alanboyle" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>alanboyle</span></a></span> - <a href="https://spacey.space/tags/Asteroid" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Asteroid</span></a> <a href="https://spacey.space/tags/2024YR4" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>2024YR4</span></a> orbit is understood well enough now that it will not impact Earth in 2032. But it's still close. A lunar impact remains possible, currently at 3.8% probability. The article paints a picture of just a light show visible from Earth. But there are more potential hazards. <a href="https://cosmiclog.com/2025/04/07/asteroid-will-miss-earth-but-may-set-off-lunar-light-show/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">cosmiclog.com/2025/04/07/aster</span><span class="invisible">oid-will-miss-earth-but-may-set-off-lunar-light-show/</span></a> <a href="https://spacey.space/tags/astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astronomy</span></a> <a href="https://spacey.space/tags/PlanetaryDefense" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PlanetaryDefense</span></a> <a href="https://spacey.space/tags/PlanetaryDefence" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PlanetaryDefence</span></a> <a href="https://spacey.space/tags/LowFlyingRocks" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>LowFlyingRocks</span></a> <a href="https://spacey.space/tags/space" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>space</span></a></p>
Astro Hawk (Ian Kluft) ✅🚀🛰️<p>"James Webb telescope takes emergency look at 'city-killer' asteroid 2024 YR4 ahead of close encounter in 2032" by <span class="h-card" translate="no"><a href="https://flipboard.com/@LiveScience" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>LiveScience</span></a></span> - <a href="https://spacey.space/tags/NASA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>NASA</span></a> <a href="https://spacey.space/tags/JWST" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JWST</span></a> observations confirm <a href="https://spacey.space/tags/asteroid" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>asteroid</span></a> <a href="https://spacey.space/tags/2024YR4" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>2024YR4</span></a> will not impact Earth on the Dec 22, 2032 fly-by. An impact on the <a href="https://spacey.space/tags/Moon" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Moon</span></a>🌒 is still not ruled out. Another JWST observation is scheduled for May before the rock disappears into the dark outer solar system for several years. <a href="https://www.livescience.com/space/asteroids/james-webb-telescope-takes-emergency-look-at-city-killer-asteroid-2024-yr4-ahead-of-close-encounter-in-2032" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">livescience.com/space/asteroid</span><span class="invisible">s/james-webb-telescope-takes-emergency-look-at-city-killer-asteroid-2024-yr4-ahead-of-close-encounter-in-2032</span></a> <a href="https://spacey.space/tags/astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astronomy</span></a> <a href="https://spacey.space/tags/PlanetaryDefense" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PlanetaryDefense</span></a> <a href="https://spacey.space/tags/PlanetaryDefence" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PlanetaryDefence</span></a> <a href="https://spacey.space/tags/LowFlyingRocks" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>LowFlyingRocks</span></a> <a href="https://spacey.space/tags/space" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>space</span></a></p>
Astro Hawk (Ian Kluft) ✅🚀🛰️<p>"A Near-Miss with a City-Killer Asteroid Highlights Gaps in Earth’s Defenses" by <span class="h-card" translate="no"><a href="https://flipboard.com/@SciAm" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>SciAm</span></a></span> - Increasing capabilities to search for the next wayward <a href="https://spacey.space/tags/asteroid" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>asteroid</span></a> will mean recurring news like <a href="https://spacey.space/tags/2024YR4" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>2024YR4</span></a> where a threat is evaluated for potential collision course with Earth. At some point, we will find one headed here. Planning and test exercises try to become prepared for what to do when we know one is coming. <a href="https://www.scientificamerican.com/article/how-planetary-defenders-planned-to-stop-that-city-killer-asteroid/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">scientificamerican.com/article</span><span class="invisible">/how-planetary-defenders-planned-to-stop-that-city-killer-asteroid/</span></a> <a href="https://spacey.space/tags/astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astronomy</span></a> <a href="https://spacey.space/tags/PlanetaryDefense" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PlanetaryDefense</span></a> <a href="https://spacey.space/tags/PlanetaryDefence" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PlanetaryDefence</span></a> <a href="https://spacey.space/tags/LowFlyingRocks" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>LowFlyingRocks</span></a> <a href="https://spacey.space/tags/space" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>space</span></a></p>
Spaceflight 🚀<p>Richard Moissl, head of <a href="https://spacey.space/tags/ESA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ESA</span></a>’s <a href="https://spacey.space/tags/PlanetaryDefence" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PlanetaryDefence</span></a> office, 54:00 : We have a blaringly obvious blind spot. Something like <a href="https://spacey.space/tags/Chelyabinsk" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Chelyabinsk</span></a> ☄️💥 could happen any moment right now, we wouldn't have any prewarning <a href="https://www.youtube.com/watch?v=8njR4413hok" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">youtube.com/watch?v=8njR4413ho</span><span class="invisible">k</span></a></p><p><a href="https://spacey.space/tags/AsteroidThreat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AsteroidThreat</span></a></p>
Astro Hawk (Ian Kluft) ✅🚀🛰️<p>"Asteroid 2024 YR4 is going to miss Earth, but the story doesn’t end there" by <span class="h-card" translate="no"><a href="https://mastodon.social/@arstechnica" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>arstechnica</span></a></span> / <span class="h-card" translate="no"><a href="https://journa.host/@sciguyspace" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>sciguyspace</span></a></span> - The orbit of <a href="https://spacey.space/tags/Asteroid" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Asteroid</span></a> <a href="https://spacey.space/tags/2024YR4" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>2024YR4</span></a> has been narrowed down enough to know it will not hit Earth. Get used to more asteroids being evaluated as potential threats. The good news is that humanity is increasingly able to find these threats which were already out there. Don't be a dinosaur.🦕🦖🌠 <a href="https://arstechnica.com/space/2025/02/asteroid-2024-yr4-may-be-a-dud-but-we-will-soon-find-many-more-threats/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">arstechnica.com/space/2025/02/</span><span class="invisible">asteroid-2024-yr4-may-be-a-dud-but-we-will-soon-find-many-more-threats/</span></a> <a href="https://spacey.space/tags/astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astronomy</span></a> <a href="https://spacey.space/tags/PlanetaryDefense" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PlanetaryDefense</span></a> <a href="https://spacey.space/tags/PlanetaryDefence" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PlanetaryDefence</span></a> <a href="https://spacey.space/tags/LowFlyingRocks" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>LowFlyingRocks</span></a> <a href="https://spacey.space/tags/space" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>space</span></a></p>
Astro Hawk (Ian Kluft) ✅🚀🛰️<p>"You’re going to see more ‘city-killer’ asteroids, but fret not, MIT astronomer says" by KTLA Los Angeles - <a href="https://spacey.space/tags/Astedroid" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Astedroid</span></a> <a href="https://spacey.space/tags/2024YR4" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>2024YR4</span></a> is a useful example of what we're likely to see more often as astronomers get better equipment to locate rocks that have always been out there but previously passed unseen in the dark. Observation of an asteroid's orbit should look like this each time. <a href="https://ktla.com/news/nationworld/city-killer-asteroids-more-common/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">ktla.com/news/nationworld/city</span><span class="invisible">-killer-asteroids-more-common/</span></a> <a href="https://spacey.space/tags/astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astronomy</span></a> <a href="https://spacey.space/tags/PlanetaryDefense" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PlanetaryDefense</span></a> <a href="https://spacey.space/tags/PlanetaryDefence" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PlanetaryDefence</span></a> <a href="https://spacey.space/tags/LowFlyingRocks" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>LowFlyingRocks</span></a> <a href="https://spacey.space/tags/space" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>space</span></a></p>
Astro Hawk (Ian Kluft) ✅🚀🛰️<p>I don't see new news articles yet. But I checked the <a href="https://spacey.space/tags/NASA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>NASA</span></a> JPL data on <a href="https://spacey.space/tags/asteroid" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>asteroid</span></a> <a href="https://spacey.space/tags/2024YR4" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>2024YR4</span></a>. It has been dropped on the Torino Scale of impact hazards from 1 to 0, previously at 3 when it was in the news. Now 1 in 26000 chance of impact in the 2032 pass. 😌 Still expected to go to zero. Dark skies under a waning moon allowed enough observations to narrow down its orbit before it's too far away from Earth to see for 3 years. <a href="https://spacey.space/tags/astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astronomy</span></a> <a href="https://spacey.space/tags/PlanetaryDefense" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PlanetaryDefense</span></a> <a href="https://spacey.space/tags/PlanetaryDefence" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PlanetaryDefence</span></a> <a href="https://spacey.space/tags/LowFlyingRocks" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>LowFlyingRocks</span></a> <a href="https://spacey.space/tags/space" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>space</span></a></p>
Bytes Europe<p>Top chip designer leaves US, ‘ghost particle’ detector: 7 science highlights <a href="https://www.byteseu.com/737259/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">byteseu.com/737259/</span><span class="invisible"></span></a> <a href="https://pubeurope.com/tags/2024YR4Asteroid" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>2024YR4Asteroid</span></a> <a href="https://pubeurope.com/tags/China" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>China</span></a> <a href="https://pubeurope.com/tags/China" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>China</span></a>'sBiggest2024Advances <a href="https://pubeurope.com/tags/ChineseSwedishTeam" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ChineseSwedishTeam</span></a> <a href="https://pubeurope.com/tags/MethaneEmissions" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MethaneEmissions</span></a> <a href="https://pubeurope.com/tags/NatureIndex" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>NatureIndex</span></a> <a href="https://pubeurope.com/tags/neutrinos" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>neutrinos</span></a> <a href="https://pubeurope.com/tags/PhysicsResearch" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PhysicsResearch</span></a> <a href="https://pubeurope.com/tags/PlanetaryDefence" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PlanetaryDefence</span></a> <a href="https://pubeurope.com/tags/rice" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>rice</span></a> <a href="https://pubeurope.com/tags/Science" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Science</span></a> <a href="https://pubeurope.com/tags/SouthChinaSea" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SouthChinaSea</span></a> <a href="https://pubeurope.com/tags/SunNan" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SunNan</span></a> <a href="https://pubeurope.com/tags/TsinghuaUniversity" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>TsinghuaUniversity</span></a> <a href="https://pubeurope.com/tags/UnderwaterObservatory" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>UnderwaterObservatory</span></a> <a href="https://pubeurope.com/tags/US" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>US</span></a></p>
Wulfy<p><span class="h-card" translate="no"><a href="https://sfba.social/@cdunnpasadena" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>cdunnpasadena</span></a></span> <span class="h-card" translate="no"><a href="https://mastodon.sdf.org/@log" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>log</span></a></span> <span class="h-card" translate="no"><a href="https://mastodon.social/@sparky57" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>sparky57</span></a></span> <span class="h-card" translate="no"><a href="https://mas.to/@gleick" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>gleick</span></a></span> </p><p>Yeah Nah, we want one in the Magawatt range.</p><p><a href="https://infosec.exchange/tags/planetarydefence" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>planetarydefence</span></a></p>
Ricardo<p>Season 8 of NASA's Curious Universe podcast just landed: <br> <br>An Asteroid by Any Other Name With Latif Nasser <br> <br><a href="https://www.nasa.gov/podcasts/curious-universe/an-asteroid-by-any-other-name-with-latif-nasser/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">nasa.gov/podcasts/curious-univ</span><span class="invisible">erse/an-asteroid-by-any-other-name-with-latif-nasser/</span></a> <br> <br><a href="https://mastodon.social/tags/NASA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>NASA</span></a> <a href="https://mastodon.social/tags/podcast" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>podcast</span></a> <a href="https://mastodon.social/tags/asteroids" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>asteroids</span></a> <a href="https://mastodon.social/tags/planetaryDefence" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>planetaryDefence</span></a></p>
formuchdeliberation<p>NASA's Planetary Defense Coordination Office is tasked with finding, tracking, and assessing the risk associated with potentially hazardous asteroids in our solar system...<br><a href="https://mastodon.world/tags/nasa" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>nasa</span></a> <a href="https://mastodon.world/tags/planetarydefence" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>planetarydefence</span></a> <a href="https://mastodon.world/tags/solarsystem" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>solarsystem</span></a> <a href="https://mastodon.world/tags/asteroids" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>asteroids</span></a> <a href="https://mastodon.world/tags/outerspace" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>outerspace</span></a> <a href="https://mastodon.world/tags/planetaryscience" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>planetaryscience</span></a> <a href="https://mastodon.world/tags/asteroidimpact" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>asteroidimpact</span></a> <a href="https://www.sciencealert.com/nasa-reveals-how-it-would-warn-world-of-impending-asteroid-disaster" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">sciencealert.com/nasa-reveals-</span><span class="invisible">how-it-would-warn-world-of-impending-asteroid-disaster</span></a></p>
Spacedlaw<p>Calling all <a href="https://epicure.social/tags/GraphicDesigners" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>GraphicDesigners</span></a> &amp; <a href="https://epicure.social/tags/Artists" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Artists</span></a>! Here's your chance to become part of space history! </p><p>Design a mission patch for the <a href="https://epicure.social/tags/Milani" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Milani</span></a> <a href="https://epicure.social/tags/CubeSat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CubeSat</span></a>, flying with </p><p>@ESA's <a href="https://epicure.social/tags/HeraMission" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>HeraMission</span></a> for <a href="https://epicure.social/tags/PlanetaryDefence" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PlanetaryDefence</span></a> to the <a href="https://epicure.social/tags/Dimorphos" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Dimorphos</span></a> <a href="https://epicure.social/tags/asteroid" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>asteroid</span></a> <a href="https://epicure.social/tags/MilaniPatchContest" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MilaniPatchContest</span></a></p><p><a href="https://www.esa.int/Space_Safety/Hera/Design_the_patch_for_Hera_s_Milani_CubeSat" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">esa.int/Space_Safety/Hera/Desi</span><span class="invisible">gn_the_patch_for_Hera_s_Milani_CubeSat</span></a></p>
Revesdespace<p>🔭🪨 Un petit astéroïde a été découvert ce matin par le <a href="https://universeodon.com/tags/PlanetaryDefence" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PlanetaryDefence</span></a> de l'ESA et a fait un survol rapproché de la Terre, 100 fois + proche que la Lune et bien en dessous de nombreux satellites en orbite terrestre.<br>La détection précoce de ces objets est de plus en plus performante</p>
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