#asteroidthreat — Public Fediverse posts

“You can only do something to address a threat if you know about it,” Moissl says. “So the very first step in the whole chain is observations 🔭. You need to find the #asteroids.” https://www.sciencefocus.com/space/asteroids-team-saving-earth

"If necessary, we can build a spacecraft to deflect an #asteroid ☄️ in four years" ⏳🥱 https://www.mundoamerica.com/entertainment/2025/02/24/67bc4638fc6c83360e8b4591.html

#ESA #AsteroidThreat

The #meteorite ☄️ crashed through the roof of a two-story house. It hit the floor in a bedroom, where it ricocheted and struck another part of the ceiling https://www.nytimes.com/2026/03/22/us/meteorite-crash-texas-home.html

#AsteroidThreat #Houston

The #meteorite ☄️ crashed through the roof of a two-story house. It hit the floor in a bedroom, where it ricocheted and struck another part of the ceiling https://www.nytimes.com/2026/03/22/us/meteorite-crash-texas-home.html

#AsteroidThreat #Houston

The #meteorite ☄️ crashed through the roof of a two-story house. It hit the floor in a bedroom, where it ricocheted and struck another part of the ceiling https://www.nytimes.com/2026/03/22/us/meteorite-crash-texas-home.html

#AsteroidThreat #Houston

The #meteorite ☄️ crashed through the roof of a two-story house. It hit the floor in a bedroom, where it ricocheted and struck another part of the ceiling https://www.nytimes.com/2026/03/22/us/meteorite-crash-texas-home.html

#AsteroidThreat #Houston

The #meteorite ☄️ crashed through the roof of a two-story house. It hit the floor in a bedroom, where it ricocheted and struck another part of the ceiling https://www.nytimes.com/2026/03/22/us/meteorite-crash-texas-home.html

#AsteroidThreat #Houston

#LSST performs very well for large impactors ☄️, discovering about 79.7% of objects larger than 140 m before impact. Only 50.3% of 50–140 m impactors, 26.8% of 20–50 m impactors, and 10.5% of 10–20 m impactors are discovered 🔭 at all. About 60% of large impactors fail to reach a one-year warning threshold. Upper mid-size objects are usually discovered only a few months before impact 💥 https://www.newplanetarium.com/journal/2026-01-29

#RubinObservatory #AsteroidThreat

A solution to mitigate low #deflection efficiency is to apply multiple low-energy impactors rather than a single high-energy impactor 💥. A lower kinetic energy impactor results in a smaller crater 🕳️ that is less affected by global curvature, increasing momentum transfer efficiency https://www.nature.com/articles/s41467-025-56010-w

#DART #AsteroidDeflection #AsteroidThreat

Any useful deflection of a larger #asteroid ☄️ would require a far greater shove or need to occur decades ahead of an impending collision 💥 to have a cumulative effect. You’d need 1,000 #DARTs to get the same deflection https://www.astronomy.com/science/how-we-track-near-earth-asteroids/

Discovery 🔭
after closest approach: 69 (46.0%)
< 24 hours : 32 (21.3%)
up to 7 days : 47 (31.3%)
> one week : 2 (1.3%)
> 7 weeks : 0 (0.0%)
> one year : 0 (0.0%)
https://en.wikipedia.org/wiki/List_of_asteroid_close_approaches_to_Earth_in_2025

#Dimorphos #Didymos #AsteroidThreat #AsteroidDeflection #NASA #DART

#Roman has the high sensitivity to measure the physical properties, compositions, and orbital trajectories of #NEOs ☄️ in order to understand their physical nature and potential #hazards to Earth. Roman's #PlanetaryDefense capabilities complement those of the operational ground-based @VRubinObs 🔭 and the upcoming #space-based 🌌 #NEOSurveyor https://arxiv.org/abs/2508.14412

🚀 October 2026 - May 2027 https://nextspaceflight.com/launches/details/6983

#AsteroidThreat #SpaceTelescope #RomanSpaceTelescope

Most Venusian co-orbitals are nearly #invisible from Earth because they often remain in the #Sun’s glare ☀️. “While surveys like those from the #RubinObservatory 🔭 @VRubinObs may be able to detect some of these #asteroids ☄️ in the near future, we believe that only a dedicated observational campaign from a space-based 🌌 mission near #Venus could potentially map and discover all the still ‘invisible’ potentially #hazardous asteroids” https://dailygalaxy.com/2025/05/is-venus-hiding-a-deadly-threat-asteroids

#AsteroidThreat

Most Venusian co-orbitals are nearly #invisible from Earth because they often remain in the #Sun’s glare ☀️. “While surveys like those from the #RubinObservatory 🔭 @VRubinObs may be able to detect some of these #asteroids ☄️ in the near future, we believe that only a dedicated observational campaign from a space-based 🌌 mission near #Venus could potentially map and discover all the still ‘invisible’ potentially #hazardous asteroids” https://dailygalaxy.com/2025/05/is-venus-hiding-a-deadly-threat-asteroids

#AsteroidThreat

Most Venusian co-orbitals are nearly #invisible from Earth because they often remain in the #Sun’s glare ☀️. “While surveys like those from the #RubinObservatory 🔭 @VRubinObs may be able to detect some of these #asteroids ☄️ in the near future, we believe that only a dedicated observational campaign from a space-based 🌌 mission near #Venus could potentially map and discover all the still ‘invisible’ potentially #hazardous asteroids” https://dailygalaxy.com/2025/05/is-venus-hiding-a-deadly-threat-asteroids

#AsteroidThreat

Most Venusian co-orbitals are nearly #invisible from Earth because they often remain in the #Sun’s glare ☀️. “While surveys like those from the #RubinObservatory 🔭 @VRubinObs may be able to detect some of these #asteroids ☄️ in the near future, we believe that only a dedicated observational campaign from a space-based 🌌 mission near #Venus could potentially map and discover all the still ‘invisible’ potentially #hazardous asteroids” https://dailygalaxy.com/2025/05/is-venus-hiding-a-deadly-threat-asteroids

#AsteroidThreat

Most Venusian co-orbitals are nearly #invisible from Earth because they often remain in the #Sun’s glare ☀️. “While surveys like those from the #RubinObservatory 🔭 @VRubinObs may be able to detect some of these #asteroids ☄️ in the near future, we believe that only a dedicated observational campaign from a space-based 🌌 mission near #Venus could potentially map and discover all the still ‘invisible’ potentially #hazardous asteroids” https://dailygalaxy.com/2025/05/is-venus-hiding-a-deadly-threat-asteroids

#AsteroidThreat

#AsteroidInstitute’s Asteroid ☄️ Discovery Analysis and Mapping (#ADAM) Platform has been in preparation for the @VRubinObs’s Legacy Survey of Space and Time (#LSST) survey 🔭, which will produce about 20 terabytes of data 💽 every night https://b612foundation.org/chelyabinsk-and-the-changing-landscape-of-planetary-defense/

#Chelyabinsk #PlanetaryDefense #AsteroidThreat

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

#AsteroidThreat

📆 2014 #Meteorite ☄️ almost hits #Norwegian 🇳🇴 #skydiver https://www.youtube.com/watch?v=gzYJaQ0h4Dg

#CNRS : 5,000 tons of #extraterrestrial dust fall to #Earth each year https://www.cnrs.fr/en/press/more-5000-tons-extraterrestrial-dust-fall-earth-each-year (Centre national de la recherche #scientifique)

#AsteroidThreat

#HelioLinc3D found a near-Earth #asteroid ☄️ that older surveys had missed — one 600 feet long, the type that could devastate 💥 a large city 🏙️ . It was specifically designed for the #RubinObservatory in #Chile 🇨🇱. Telescopic 🔭 surveys have so far found more than 32,000 near- #Earth asteroids. Fainter asteroids ⚫ are mostly #undiscovered at present https://www.nytimes.com/2023/08/05/science/space-asteroids-rubin-heliolinc3d.html

#NEO #AsteroidThreat

#NASA 📆 2014 Every #day, Earth is bombarded with more than 100 tons of dust and sand-sized particles.

About once a year, an automobile-sized 🚗 #asteroid ☄️ hits Earth's atmosphere, creates an impressive fireball, and burns up before reaching the surface.

If a rocky #meteoroid larger than 25 meters but smaller than one kilometer were to hit #Earth 🌍, it would likely cause local #damage 💥 to the #impact area.

Anything larger than one to two kilometers 📏 could have #worldwide effects. https://www.nasa.gov/mission_pages/asteroids/overview/fastfacts.html

#AsteroidThreat

#Guardian 📆 26 Jan 2023 a delivery truck 🚚 -sized #asteroid ☄️ passed lower than communication #satellites 🛰️ . "One of the closest approaches by a #known #NEO ever #recorded”. First spotted 🔭 by an #amateur #astronomer https://www.theguardian.com/science/2023/jan/26/asteroid-2023-bu-about-to-pass-earth-in-one-of-closest-ever-encounters

#WashingtonPost 📆 October 24, 2022 "The bad news is #NASA estimates that it tracks only about 40 percent 📊 of the #asteroids ☄️#large enough that they could cause calamity if they were to hit 💥 #Earth" https://www.washingtonpost.com/technology/2022/10/24/nasa-asteroid-telescope

#AsteroidThreat

Picture : https://commons.wikimedia.org/wiki/File:Triple_asteroid_3122_Florence.gif

#RheaSpace plans a #robotic 🤖 rescue mission for #NASA’s #SpaceTelescope 🔭

@arstechnica The #SpaceAgency would welcome the return of #Spitzer not only for scientific purposes, but also to help characterize the #NEO #AsteroidThreat ☄️.
But is Spitzer healthy after all this time? "The #SolarCells may be degraded, and there may be #meteorite ☄️ impacts," https://arstechnica.com/science/2023/05/a-private-company-has-an-audacious-plan-to-rescue-nasas-last-great-observatory

#SpaceMaintenance

"You can't #deflect 🛰️ something you haven't #discovered" 🔭 #Asteroid ☄️ Detection on #Scientists #Rock https://youtu.be/VtE18GhVmRg

#AsteroidThreat

Every day, 10-200 #tons of #material from #space fall into the #Earth's #atmosphere. Up to a thousand meter-sized #minimoons (#asteroids that are temporarily captured by Earth's #gravity) are in temporary #orbits around the Earth every year, but so far only a few have been #discovered.
Daniel Kastinen, doctoral #student, #Swedish Institute of #SpacePhysics https://www.mynewsdesk.com/se/irf/pressreleases/ny-forskning-avsloejar-rymdskrot-osynliga-meteorer-och-jordnaera-asteroider-slash-new-research-reveals-space-debris-invisible-meteors-and-near-earth-asteroids-3218521

#AsteroidThreat

#NYT 📆 Jan. 26, 2023 The #asteroid about the size of a truck 🚚 (10m across) did not hit #Earth 🌎 but was one of the #closest #approaches ever by such an object, hurtling past Earth at just 2,200 miles above its surface. It was #unknown to #NASA, or anyone, until last Saturday https://www.nytimes.com/2023/01/26/science/astronomy-asteroids-2023bu.html

The object that excavated the #Barringer #crater was about 50 m across https://en.wikipedia.org/wiki/Meteor_Crater

#Impact simulation : https://neal.fun/asteroid-launcher

#AsteroidThreat

The keyword hashtag list reached 5️⃣5️⃣ 55 entries :

#AsteroidMining
#AsteroidThreat
#CelestialBodyLanding
#DSOC (Deep Space Optical Communications)
#HallEffectThruster
#HumanSpaceflight
#HumanSpaceflightBasics
#HumanSpaceflightHealth
#HumanSpaceflightSecurity
#ISRU (in situ resource utilization)
#LaunchCost
#Lunar3dPrinting
#MoonMining
#PrivateSpaceflight
#ReusableLaunchVehicle
#RocketEngine
#RocketScience
#SatelliteImprovement
#SatelliteInternetAccess
#SBSP (Space-based Solar Power)
#SmallSat
#SpaceAgency
#SpaceCommunication
#SpaceCompany
#SpaceCraft
#SpaceColonization
#SpacecraftComparison
#SpacecraftPropulsion
#SpaceDebris
#SpaceEnergy
#SpaceEvent
#SpaceFood
#SpaceForce
#SpaceHabitat
#SpaceHotel
#SpaceIndustry
#SpaceInfrastructure
#SpaceLogistics
#SpaceMaintenance
#SpaceMining
#SpaceNavigation
#SpacePhotography
#SpacePlants
#SpacePolitics
#SpacePort
#SpaceRegulation
#SpaceRobot
#SpaceScience
#SpaceSciFi
#SpaceStation
#SpaceSuit
#SpaceTelescope
#SpaceTourism
#SpaceWelding
#TimeToOrbit

#NEO Surveyor construction 🔧 begins : “For the first time Earth’s inhabitants are developing methods to protect #Earth by deflecting hazardous #asteroids ☄️, but before we can #deflect them, we first need to #find them" https://www.jpl.nasa.gov/news/construction-begins-on-nasas-next-generation-asteroid-hunter

#AsteroidThreat #NASA #JPL #PlanetaryDefense

A 0.8 mm hole 🕳️ caused the #Soyuz #leak ⛲. @sciguyspace : #Roscosmos said working groups of specialists would spend about another week assessing the #issue. The next #Soyuz could be ready for flight 📆 February 19.
The biggest #risk is a #health emergency 🚑 or if there is some station issue that forces an #emergency #evacuation https://arstechnica.com/science/2022/12/russia-says-it-will-take-no-immediate-action-on-damaged-soyuz-spacecraft

#TASS 📆 December 19 "the #temperature reached [...] plus 40 degrees 🌡️Celsius in its instrumentation/equipment compartment" https://tass.com/science/1552657

Picture : #Debris hole in a #satellite panel https://commons.wikimedia.org/wiki/File:SMM_panel_hole.jpg

#HumanSpaceflightSecurity #AsteroidThreat #SpaceStation #Satellites #SpaceDebris

☄️ “The most glaring #mistake is the #government cover-up… just completely #bogus.” And a #meteorite that #struck southwest Ontario in November illustrated – in a dramatic and visceral way – that a cover-up couldn’t be #further from the truth when actual #Earth-pummeling #asteroids are found https://www.sciencefocus.com/news/you-help-protect-earth-asteroid

Picture : https://commons.wikimedia.org/wiki/File:Comet_NEOWISE_over_Ayval%C4%B1k_Islands_Nature_Park.jpg

#AsteroidThreat #asteroid #impact #prediction