As Comet 3I/Atlas Whizzes Past Earth and Clash of Clans is Threatened By a Looming Asteroid, YouTube Scientist Hank Green Says We're Detecting More Space Objects Than Ever — But Should We Really Be Worried?
https://atlas.whatip.xyz/post.php?slug=as-comet-3iatlas-whizzes-past-earth-and-clash-of-clans-is-threatened-by-a-looming-asteroid-youtube-scientist-hank-green-says-were-detecting-more-space-objects-than-ever-but-should-we-really-be-worried
"Exploring Space: Cosmic Wonders and Asteroid Alarms with Hank Green!"
#spaceobjects #cometatlas #asteroidthreat #cosmicconundrums
#AsteroidThreat
The research group estimates the #meteorite ☄️ crater's age to be a maximum of 10,000 years https://www.heise.de/en/news/Previously-overlooked-900-meter-meteorite-crater-discovered-in-southern-China-11082721.html
#2025SC79 is the second-fastest #asteroid ☄️, roughly 700 meters long, spotted on Sept. 27 hiding in the sun's ☀️ glare. "The most #dangerous asteroids are the most difficult to detect" 🔭 https://www.space.com/astronomy/asteroids/astronomers-discover-2nd-fastest-asteroid-in-the-solar-system-hiding-in-the-suns-glare
#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
📊 #Asteroids ☄️ which came closer to Earth than the #Moon 🌙 in 2025 by time of discovery 🔭
• After closest approach: 69 (46.0%)
• < 24 hours before: 32 (21.3%)
• up to 7 days before: 47 (31.3%)
• > one week before: 2 (1.3%)
• > 7 weeks before: 0 (0.0%)
• > one year before: 0 (0.0%)
https://en.wikipedia.org/wiki/List_of_asteroid_close_approaches_to_Earth_in_2025
When comparing the likelihood of #asteroid ☄️events to other possible events, some of the results might be surprising. For example, the chance of a >140 meter asteroid hitting 💥 Earth is more likely than an individual being struck by #lightning ⚡ in their lifetime https://phys.org/news/2025-08-lifetime-odds-dying-asteroid-impact.html
“To be able to hear 👂 the sonic boom loudly from the ground suggests that quite a big chunk of the #meteor was pretty close to the ground. And that possibly means there’s chunks of the #meteorite ☄️ that actually made it down to the ground" https://www.independent.co.uk/space/meteor-explosion-sonic-boom-australia-houses-b2805229.html
“This is something that used to be expected once every few decades and not multiple times within 20 years”. Multiple fragments of that #meteorite ☄️ punched through the roof of a home just south of #Atlanta, dented laminate flooring and missed the man living there by 14 feet 📏 https://www.nytimes.com/2025/08/11/science/meteor-georgia-older-than-earth.html
Several dark comets – including the relatively large #2003RM – have been found in the near-Earth neighbourhood. These dark #comets ☄️ underwent bursts of #acceleration, enough to move off their orbits by hundreds of kilometres every few years. What lies behind their erratic movements remains a mystery. They do not show any signs of material being ejected from their surface https://www.bbc.com/future/article/20250807-a-japanese-spacecraft-is-racing-toward-a-mysterious-dark-comet-to-discover-the-secrets-it-holds
📆 August 8, 2025 #'Meteorite ☄️ fragments struck a man's roof like a bullet and left a dent in the floor of the home outside #Atlanta https://abcnews.go.com/Technology/wireStory/fiery-meteor-punched-georgia-homes-roof-older-earth-124493520
According to #NASA, space rocks ☄️ measuring about one to 20 metres across collided with Earth’s atmosphere resulting in fireballs 🔥 556 times over 20 years. #Chelyabinsk is the best example. The types of #asteroids we should perhaps be most concerned about are those about 140 metres 📏 across https://www.theguardian.com/science/2025/jun/28/its-something-that-happens-are-we-doing-enough-to-save-earth-from-a-devastating-asteroid-strike
The first step in averting an #asteroid ☄️ impact 💥 with Earth is just to know what near-Earth objects are out there 🔭. Plenty of city-killer asteroids remain lurking and undiscovered, potentially still posing a real risk to life on the planet. In the 50-meter range, a meager 7 percent 📊 of #NEOs have been found. @VRubinObs and #NEOSurveyor will locate an anticipated 90 percent of the entire population of objects 140 meters 📏 and larger https://spectrum.ieee.org/planetary-defense-killer-asteroids
While taking images of the distant #universe, @VRubinObs also discovered 2,104 #asteroids ☄️ flitting about in our own solar system—including seven whose orbits hew close to Earth’s own https://www.technologyreview.com/2025/06/23/1119129/first-images-vera-c-rubin-observatory
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
It took 225 years ⏳ to find the 1.5 million #asteroids ☄️ known to date. The Vera C. Rubin Observatory 🔭 @VRubinObs will double this number in less than a year. ⏱️ https://www.heise.de/en/news/Simulation-New-telescope-soon-to-detect-millions-of-objects-in-the-solar-system-10425160.html
#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/
#ESA : "The main challenge stems from the population of middle-size objects, ranging from tens to hundreds of metres in diameter 📏. There are a lot of these #asteroids ☄️, and most have not been spotted🔭 yet" 🙈 https://www.esa.int/ESA_Multimedia/Images/2018/06/Asteroid_danger_explained
Short: still to be spotted >70% (the ones > 100m)
In 2005, the #US Congress laid out a clear mandate: the nation should be able to detect, track, catalog, and characterize no less than 90 percent of all #NEO at least 140 meters 📏 across.
As of today, we have identified less than half and characterized only a small percentage 📊 of those possible threats. Even if we did have a full census, we do not have the #capabilities to rapidly respond to an Earth-intersecting #asteroid ☄️https://arstechnica.com/science/2024/05/outdoing-the-dinosaurs-what-we-could-do-if-we-spot-a-threatening-asteroid
#Asteroid impact 💥 craters in #OpenStreetMap https://umap.openstreetmap.de/en/map/meteor-craters_94040
Frequency and #risk : https://en.wikipedia.org/wiki/Impact_event#Frequency_and_risk
"Planet-killing #asteroids ☄️ impact the earth every 50 million years. The last one impacted 65 million years ago, so we're 15 million years overdue for another one. The scenario of a #comet on a collision 💥 course with the earth is utterly probable - indeed, certain."
But she says we just need to "keep calm and don't panic", because #clever people like her 👩🔬 are working on it. "This is not a signal to start buying pasta 🍝 and hoarding toilet rolls 🧻" https://www.bbc.co.uk/news/newsbeat-59939577
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