#planetarydefence — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #planetarydefence, aggregated by home.social.
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Huge asteroid will skim terrifyingly close to Earth tomorrow – ‘as close as you can get’ | Science | News
A newly discovered asteroid will pass Earth at a distance of roughly 90,000 km (56,000 miles) tomorrow, in…
#NewsBeep #News #Science #2026JH2 #Asteroids #Chelyabinskevent #GB #Near-Earthasteroid #Planetarydefence #Science(section) #UK #UnitedKingdom
https://www.newsbeep.com/uk/589196/ -
https://www.europesays.com/uk/966836/ Huge asteroid will skim terrifyingly close to Earth tomorrow – ‘as close as you can get’ | Science | News #2026JH2 #Asteroids #ChelyabinskEvent #NearEarthAsteroid #PlanetaryDefence #Science #Science(section) #UK #UnitedKingdom
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#asteroid #2026JN4 is apparently not being added to the official list of pre-impact detections because there were not enough observations to nail down an estimated impact point and there were no reports to confirm air or ground impact. More observations could change that. (ref @michael_w_busch ) https://mastodon.online/@michael_w_busch/116581727698756513 #astronomy #PlanetaryDefense #PlanetaryDefence #LowFlyingRocks
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#asteroid #2026JN4 is apparently not being added to the official list of pre-impact detections because there were not enough observations to nail down an estimated impact point and there were no reports to confirm air or ground impact. More observations could change that. (ref @michael_w_busch ) https://mastodon.online/@michael_w_busch/116581727698756513 #astronomy #PlanetaryDefense #PlanetaryDefence #LowFlyingRocks
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#asteroid #2026JN4 is apparently not being added to the official list of pre-impact detections because there were not enough observations to nail down an estimated impact point and there were no reports to confirm air or ground impact. More observations could change that. (ref @michael_w_busch ) https://mastodon.online/@michael_w_busch/116581727698756513 #astronomy #PlanetaryDefense #PlanetaryDefence #LowFlyingRocks
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#asteroid #2026JN4 is apparently not being added to the official list of pre-impact detections because there were not enough observations to nail down an estimated impact point and there were no reports to confirm air or ground impact. More observations could change that. (ref @michael_w_busch ) https://mastodon.online/@michael_w_busch/116581727698756513 #astronomy #PlanetaryDefense #PlanetaryDefence #LowFlyingRocks
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#asteroid #2026JN4 is apparently not being added to the official list of pre-impact detections because there were not enough observations to nail down an estimated impact point and there were no reports to confirm air or ground impact. More observations could change that. (ref @michael_w_busch ) https://mastodon.online/@michael_w_busch/116581727698756513 #astronomy #PlanetaryDefense #PlanetaryDefence #LowFlyingRocks
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At approximately 2026-May-15 13:44 UTC, #asteroid #2026JN4 impacted Earth's atmosphere shortly after discovery. The 1m-wide rock was not a threat. Most that size are simply not discovered before becoming a common fireball meteor. The previous impactor discovered before impact was in December 2024. https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=2026%20JN4&view=OPC #astronomy #PlanetaryDefense #PlanetaryDefence #LowFlyingRocks
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At approximately 2026-May-15 13:44 UTC, #asteroid #2026JN4 impacted Earth's atmosphere shortly after discovery. The 1m-wide rock was not a threat. Most that size are simply not discovered before becoming a common fireball meteor. The previous impactor discovered before impact was in December 2024. https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=2026%20JN4&view=OPC #astronomy #PlanetaryDefense #PlanetaryDefence #LowFlyingRocks
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At approximately 2026-May-15 13:44 UTC, #asteroid #2026JN4 impacted Earth's atmosphere shortly after discovery. The 1m-wide rock was not a threat. Most that size are simply not discovered before becoming a common fireball meteor. The previous impactor discovered before impact was in December 2024. https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=2026%20JN4&view=OPC #astronomy #PlanetaryDefense #PlanetaryDefence #LowFlyingRocks
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At approximately 2026-May-15 13:44 UTC, #asteroid #2026JN4 impacted Earth's atmosphere shortly after discovery. The 1m-wide rock was not a threat. Most that size are simply not discovered before becoming a common fireball meteor. The previous impactor discovered before impact was in December 2024. https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=2026%20JN4&view=OPC #astronomy #PlanetaryDefense #PlanetaryDefence #LowFlyingRocks
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At approximately 2026-May-15 13:44 UTC, #asteroid #2026JN4 impacted Earth's atmosphere shortly after discovery. The 1m-wide rock was not a threat. Most that size are simply not discovered before becoming a common fireball meteor. The previous impactor discovered before impact was in December 2024. https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=2026%20JN4&view=OPC #astronomy #PlanetaryDefense #PlanetaryDefence #LowFlyingRocks
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"Phew! NASA Rules Out Asteroid Smashup on the Moon in 2032" by @universetoday / @alanboyle - Astronomical observations of #asteroid #2024YR4, including from #NASA #WebbSpaceTelescope🔭 #JWST, refined its orbit estimate to rule out impact with the #Moon on its Dec 22, 2032 flyby. Possibility of Earth impact on that pass was already ruled out in April 2025. The 60m diameter rock would be a serious threat. https://www.universetoday.com/articles/phew-nasa-rules-out-asteroid-smashup-on-the-moon-in-2032 #astronomy #PlanetaryDefense #PlanetaryDefence #LowFlyingRocks #space
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"Phew! NASA Rules Out Asteroid Smashup on the Moon in 2032" by @universetoday / @alanboyle - Astronomical observations of #asteroid #2024YR4, including from #NASA #WebbSpaceTelescope🔭 #JWST, refined its orbit estimate to rule out impact with the #Moon on its Dec 22, 2032 flyby. Possibility of Earth impact on that pass was already ruled out in April 2025. The 60m diameter rock would be a serious threat. https://www.universetoday.com/articles/phew-nasa-rules-out-asteroid-smashup-on-the-moon-in-2032 #astronomy #PlanetaryDefense #PlanetaryDefence #LowFlyingRocks #space
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"Phew! NASA Rules Out Asteroid Smashup on the Moon in 2032" by @universetoday / @alanboyle - Astronomical observations of #asteroid #2024YR4, including from #NASA #WebbSpaceTelescope🔭 #JWST, refined its orbit estimate to rule out impact with the #Moon on its Dec 22, 2032 flyby. Possibility of Earth impact on that pass was already ruled out in April 2025. The 60m diameter rock would be a serious threat. https://www.universetoday.com/articles/phew-nasa-rules-out-asteroid-smashup-on-the-moon-in-2032 #astronomy #PlanetaryDefense #PlanetaryDefence #LowFlyingRocks #space
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"Phew! NASA Rules Out Asteroid Smashup on the Moon in 2032" by @universetoday / @alanboyle - Astronomical observations of #asteroid #2024YR4, including from #NASA #WebbSpaceTelescope🔭 #JWST, refined its orbit estimate to rule out impact with the #Moon on its Dec 22, 2032 flyby. Possibility of Earth impact on that pass was already ruled out in April 2025. The 60m diameter rock would be a serious threat. https://www.universetoday.com/articles/phew-nasa-rules-out-asteroid-smashup-on-the-moon-in-2032 #astronomy #PlanetaryDefense #PlanetaryDefence #LowFlyingRocks #space
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"Phew! NASA Rules Out Asteroid Smashup on the Moon in 2032" by @universetoday / @alanboyle - Astronomical observations of #asteroid #2024YR4, including from #NASA #WebbSpaceTelescope🔭 #JWST, refined its orbit estimate to rule out impact with the #Moon on its Dec 22, 2032 flyby. Possibility of Earth impact on that pass was already ruled out in April 2025. The 60m diameter rock would be a serious threat. https://www.universetoday.com/articles/phew-nasa-rules-out-asteroid-smashup-on-the-moon-in-2032 #astronomy #PlanetaryDefense #PlanetaryDefence #LowFlyingRocks #space
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Already on Monday, the Scientific and Technical Subcommittee started its 2026 session. This morning, the Space Mission Planning Advisory Group started its meeting. At #SMPAG, Space Agencies meet and discuss planetary defence, i. e. how to react in case a Near-Earth Object threatens to hit our planet. More information here: https://smpag.net #PlanetaryDefence #COPUOS #STSC #NEO #Asteroid #space
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Already on Monday, the Scientific and Technical Subcommittee started its 2026 session. This morning, the Space Mission Planning Advisory Group started its meeting. At #SMPAG, Space Agencies meet and discuss planetary defence, i. e. how to react in case a Near-Earth Object threatens to hit our planet. More information here: https://smpag.net #PlanetaryDefence #COPUOS #STSC #NEO #Asteroid #space
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Already on Monday, the Scientific and Technical Subcommittee started its 2026 session. This morning, the Space Mission Planning Advisory Group started its meeting. At #SMPAG, Space Agencies meet and discuss planetary defence, i. e. how to react in case a Near-Earth Object threatens to hit our planet. More information here: https://smpag.net #PlanetaryDefence #COPUOS #STSC #NEO #Asteroid #space
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Already on Monday, the Scientific and Technical Subcommittee started its 2026 session. This morning, the Space Mission Planning Advisory Group started its meeting. At #SMPAG, Space Agencies meet and discuss planetary defence, i. e. how to react in case a Near-Earth Object threatens to hit our planet. More information here: https://smpag.net #PlanetaryDefence #COPUOS #STSC #NEO #Asteroid #space
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Already on Monday, the Scientific and Technical Subcommittee started its 2026 session. This morning, the Space Mission Planning Advisory Group started its meeting. At #SMPAG, Space Agencies meet and discuss planetary defence, i. e. how to react in case a Near-Earth Object threatens to hit our planet. More information here: https://smpag.net #PlanetaryDefence #COPUOS #STSC #NEO #Asteroid #space
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"Asteroid 2024 YR4's collision with the moon could create a flash visible from Earth, study finds" by @LiveScience - #Asteroid #2024YR4 was briefly subject of concern until Earth impact was ruled out. It's still being studied for potential impact with the #Moon on Dec 22, 2032. New paper estimates impact areas, all on the side facing Earth. A tiny fraction might be in darkness, visible without optics. https://www.livescience.com/space/asteroids/asteroid-2024-yr4s-collision-with-the-moon-could-create-a-flash-visible-from-earth-study-finds #astronomy #PlanetaryDefense #PlanetaryDefence #LowFlyingRocks #space
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"Asteroid 2024 YR4's collision with the moon could create a flash visible from Earth, study finds" by @LiveScience - #Asteroid #2024YR4 was briefly subject of concern until Earth impact was ruled out. It's still being studied for potential impact with the #Moon on Dec 22, 2032. New paper estimates impact areas, all on the side facing Earth. A tiny fraction might be in darkness, visible without optics. https://www.livescience.com/space/asteroids/asteroid-2024-yr4s-collision-with-the-moon-could-create-a-flash-visible-from-earth-study-finds #astronomy #PlanetaryDefense #PlanetaryDefence #LowFlyingRocks #space
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"Asteroid 2024 YR4's collision with the moon could create a flash visible from Earth, study finds" by @LiveScience - #Asteroid #2024YR4 was briefly subject of concern until Earth impact was ruled out. It's still being studied for potential impact with the #Moon on Dec 22, 2032. New paper estimates impact areas, all on the side facing Earth. A tiny fraction might be in darkness, visible without optics. https://www.livescience.com/space/asteroids/asteroid-2024-yr4s-collision-with-the-moon-could-create-a-flash-visible-from-earth-study-finds #astronomy #PlanetaryDefense #PlanetaryDefence #LowFlyingRocks #space
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"Asteroid 2024 YR4's collision with the moon could create a flash visible from Earth, study finds" by @LiveScience - #Asteroid #2024YR4 was briefly subject of concern until Earth impact was ruled out. It's still being studied for potential impact with the #Moon on Dec 22, 2032. New paper estimates impact areas, all on the side facing Earth. A tiny fraction might be in darkness, visible without optics. https://www.livescience.com/space/asteroids/asteroid-2024-yr4s-collision-with-the-moon-could-create-a-flash-visible-from-earth-study-finds #astronomy #PlanetaryDefense #PlanetaryDefence #LowFlyingRocks #space
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"Asteroid 2024 YR4's collision with the moon could create a flash visible from Earth, study finds" by @LiveScience - #Asteroid #2024YR4 was briefly subject of concern until Earth impact was ruled out. It's still being studied for potential impact with the #Moon on Dec 22, 2032. New paper estimates impact areas, all on the side facing Earth. A tiny fraction might be in darkness, visible without optics. https://www.livescience.com/space/asteroids/asteroid-2024-yr4s-collision-with-the-moon-could-create-a-flash-visible-from-earth-study-finds #astronomy #PlanetaryDefense #PlanetaryDefence #LowFlyingRocks #space
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Dynamical development of strength and stability of #asteroid material under 440 GeV proton beam irradiation: https://www.nature.com/articles/s41467-025-66912-4 -> New study simulates asteroid #impact – and reveals the hidden strength of space rocks, a breakthrough with direct implications for #PlanetaryDefence strategies: https://www.ox.ac.uk/news/2026-01-08-new-study-simulates-asteroid-impact-and-reveals-hidden-strength-space-rocks
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Amid 3I/ATLAS Buzz ESA’s Planetary Defense Team Detects The 40,000th Near-Earth Asteroid; Is The Planet Safe?
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Amid 3I/ATLAS Buzz ESA’s Planetary Defense Team Detects The 40,000th Near-Earth Asteroid; Is The Planet Safe?
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Amid 3I/ATLAS Buzz ESA’s Planetary Defense Team Detects The 40,000th Near-Earth Asteroid; Is The Planet Safe?
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Amid 3I/ATLAS Buzz ESA’s Planetary Defense Team Detects The 40,000th Near-Earth Asteroid; Is The Planet Safe?
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Amid 3I/ATLAS Buzz ESA’s Planetary Defense Team Detects The 40,000th Near-Earth Asteroid; Is The Planet Safe?
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"Apophis flyby in 2029 will be the first time a potentially hazardous asteroid has been visible to the naked eye" by @LiveScience - #Asteroid #99942Apophis will make a close pass by Earth on April 13, 2029. Earth will not be affected. But scientists are gearing up to observe how Earth's gravity changes the orbit of the asteroid, and possibly deforms its shape. There's so much to learn for #PlanetaryDefense / #PlanetaryDefence for the future. https://www.livescience.com/space/asteroids/apophis-flyby-in-2029-will-be-the-first-time-a-potentially-hazardous-asteroid-has-been-visible-to-the-naked-eye #astronomy #LowFlyingRocks
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"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."
https://spectrum.ieee.org/planetary-defense-killer-asteroids
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An impact of #asteroid #2024YR4 on the #Moon 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 #NASA #Artemis 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. #astronomy #PlanetaryDefense #PlanetaryDefence #LowFlyingRocks #space
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"Asteroid will miss Earth — but may set off lunar light show" by @cosmiclog / @alanboyle - #Asteroid #2024YR4 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. https://cosmiclog.com/2025/04/07/asteroid-will-miss-earth-but-may-set-off-lunar-light-show/ #astronomy #PlanetaryDefense #PlanetaryDefence #LowFlyingRocks #space
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"James Webb telescope takes emergency look at 'city-killer' asteroid 2024 YR4 ahead of close encounter in 2032" by @LiveScience - #NASA #JWST observations confirm #asteroid #2024YR4 will not impact Earth on the Dec 22, 2032 fly-by. An impact on the #Moon🌒 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. https://www.livescience.com/space/asteroids/james-webb-telescope-takes-emergency-look-at-city-killer-asteroid-2024-yr4-ahead-of-close-encounter-in-2032 #astronomy #PlanetaryDefense #PlanetaryDefence #LowFlyingRocks #space
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"A Near-Miss with a City-Killer Asteroid Highlights Gaps in Earth’s Defenses" by @SciAm - Increasing capabilities to search for the next wayward #asteroid will mean recurring news like #2024YR4 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. https://www.scientificamerican.com/article/how-planetary-defenders-planned-to-stop-that-city-killer-asteroid/ #astronomy #PlanetaryDefense #PlanetaryDefence #LowFlyingRocks #space
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Richard Moissl, head of #ESA’s #PlanetaryDefence office, 54:00 : We have a blaringly obvious blind spot. Something like #Chelyabinsk ☄️💥 could happen any moment right now, we wouldn't have any prewarning https://www.youtube.com/watch?v=8njR4413hok
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Ramses and the Apophis flyby will be super exciting for #PlanetSci and #PlanetaryDefence. On top of all the detailed science, the closeness should allow near real-time streaming of HD video from the surface of the #asteroid at the same time as some parts of the world can see it from the ground!
RE: https://bsky.app/profile/did:plc:5a2jfvqbytdqv4i2c57ig6v7/post/3ljmopm33c22z -
"Asteroid 2024 YR4 is going to miss Earth, but the story doesn’t end there" by @arstechnica / @sciguyspace - The orbit of #Asteroid #2024YR4 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.🦕🦖🌠 https://arstechnica.com/space/2025/02/asteroid-2024-yr4-may-be-a-dud-but-we-will-soon-find-many-more-threats/ #astronomy #PlanetaryDefense #PlanetaryDefence #LowFlyingRocks #space
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"You’re going to see more ‘city-killer’ asteroids, but fret not, MIT astronomer says" by KTLA Los Angeles - #Asteroid #2024YR4 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. https://ktla.com/news/nationworld/city-killer-asteroids-more-common/ #astronomy #PlanetaryDefense #PlanetaryDefence #LowFlyingRocks #space
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I don't see new news articles yet. But I checked the #NASA JPL data on #asteroid #2024YR4. 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. #astronomy #PlanetaryDefense #PlanetaryDefence #LowFlyingRocks #space
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Top chip designer leaves US, ‘ghost particle’ detector: 7 science highlights https://www.byteseu.com/737259/ #2024YR4Asteroid #China #China'sBiggest2024Advances #ChineseSwedishTeam #MethaneEmissions #NatureIndex #neutrinos #PhysicsResearch #PlanetaryDefence #rice #Science #SouthChinaSea #SunNan #TsinghuaUniversity #UnderwaterObservatory #US
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Statement by SMPAG on Asteroid 2024 YR4
available at https://www.cosmos.esa.int/web/smpag/
#2024yr4 #PlanetaryDefence #SMPAG -
@dlr_next Immer an den Hitchhiker‘s Guide denken: Don‘t panic! Um auf so etwas vorbereitet zu sein wurde 2013 vom UN-Weltraumausschuss beschlossen, das International Asteroid Warning Network und die Space Mission Planning Advisory Group einzurichten, an der auch das @DLR beteiligt ist. Näheres hier: https://iawn.net und https://smpag.net #PlanetaryDefence #IAWN #SMPAG
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@dlr_next Immer an den Hitchhiker‘s Guide denken: Don‘t panic! Um auf so etwas vorbereitet zu sein wurde 2013 vom UN-Weltraumausschuss beschlossen, das International Asteroid Warning Network und die Space Mission Planning Advisory Group einzurichten, an der auch das @DLR beteiligt ist. Näheres hier: https://iawn.net und https://smpag.net #PlanetaryDefence #IAWN #SMPAG
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@dlr_next Immer an den Hitchhiker‘s Guide denken: Don‘t panic! Um auf so etwas vorbereitet zu sein wurde 2013 vom UN-Weltraumausschuss beschlossen, das International Asteroid Warning Network und die Space Mission Planning Advisory Group einzurichten, an der auch das @DLR beteiligt ist. Näheres hier: https://iawn.net und https://smpag.net #PlanetaryDefence #IAWN #SMPAG