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Spaceflight 🚀“We expect more possible impactors 💥 to be found 🔭 in coming years as more sensitive <a href="https://spacey.space/tags/asteroid" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#asteroid</a> ☄️ search programs begin operation" <a href="https://www.forbes.com/sites/amandakooser/2025/04/02/webb-measures-size-of-that-scary-not-scary-city-killer-asteroid" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.forbes.com/sites/amandakooser/2025/04/02/webb-measures-size-of-that-scary-not-scary-city-killer-asteroid</a><a href="https://spacey.space/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomy</a> <a href="https://spacey.space/tags/AsteroidThreat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AsteroidThreat</a>

Spaceflight 🚀The vast majority of <a href="https://spacey.space/tags/asteroid" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#asteroid</a> impacts 💥 are still missed 🙈. Based on the few successfully predicted asteroid impacts, the average time between initial detection and impact is currently around 9 hours ⏱️ <a href="https://en.wikipedia.org/wiki/Asteroid_impact_prediction#Effectiveness_of_the_current_system" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://en.wikipedia.org/wiki/Asteroid_impact_prediction#Effectiveness_of_the_current_system</a><a href="https://spacey.space/tags/AsteroidThreat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AsteroidThreat</a>

Spaceflight 🚀Richard Moissl, head of <a href="https://spacey.space/tags/ESA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ESA</a>’s <a href="https://spacey.space/tags/PlanetaryDefence" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#PlanetaryDefence</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 noreferrer" target="_blank">#Chelyabinsk</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 noreferrer" translate="no" target="_blank">https://www.youtube.com/watch?v=8njR4413hok</a><a href="https://spacey.space/tags/AsteroidThreat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AsteroidThreat</a>

Spaceflight 🚀The warning time ⚠️ is unlikely to be more than a few months. Impacts 💥 from objects as small as 50 meters in diameter 📏, which are far more common, are historically extremely destructive regionally <a href="https://en.wikipedia.org/wiki/Asteroid_impact_avoidance#Deflection_efforts" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://en.wikipedia.org/wiki/Asteroid_impact_avoidance#Deflection_efforts</a><a href="https://spacey.space/tags/AsteroidThreat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AsteroidThreat</a> <a href="https://spacey.space/tags/AsteroidDeflection" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AsteroidDeflection</a>

Spaceflight 🚀A single <a href="https://spacey.space/tags/HAMMER" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#HAMMER</a> impactor (9-meter-tall, 8.8-ton) could deflect an object ☄️ 90 meters in diameter 📏 by around 1.4 Earth radii with 10 years of lead time – from the time of launch to anticipated Earth impact. If limited to <a href="https://spacey.space/tags/telescopic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#telescopic</a> 🔭 observations, it’s possible that researchers may not be 100 percent certain of an <a href="https://spacey.space/tags/impact" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#impact</a> until less than a year before collision 💥. <a href="https://www.llnl.gov/article/44186/scientists-design-conceptual-asteroid-deflector-and-evaluate-it-against-massive-potential" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.llnl.gov/article/44186/scientists-design-conceptual-asteroid-deflector-and-evaluate-it-against-massive-potential</a><a href="https://spacey.space/tags/AsteroidThreat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AsteroidThreat</a> <a href="https://spacey.space/tags/AsteroidDeflection" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AsteroidDeflection</a> <a href="https://spacey.space/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomy</a>

Spaceflight 🚀The 20-inch diameter <a href="https://spacey.space/tags/telescope" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#telescope</a> 🔭 will carry out a five-year baseline survey to find at least two-thirds of the unknown <a href="https://spacey.space/tags/NEOs" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NEOs</a> ☄️ larger than 140 meters 📏. It will launch around 📆 September 2027 to detect and observe <a href="https://spacey.space/tags/asteroids" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#asteroids</a> and comets that could potentially pose an impact 💥 threat to Earth <a href="https://www.aerotime.aero/articles/spacex-nasa-rocket-asteroid" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.aerotime.aero/articles/spacex-nasa-rocket-asteroid</a><a href="https://spacey.space/tags/AsteroidThreat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AsteroidThreat</a> <a href="https://spacey.space/tags/NASA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NASA</a> <a href="https://spacey.space/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomy</a>

Spaceflight 🚀"The bad news is <a href="https://spacey.space/tags/NASA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NASA</a> estimates that it tracks only about 40 percent 📊 of the <a href="https://spacey.space/tags/asteroids" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#asteroids</a> ☄️<a href="https://spacey.space/tags/large" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#large</a> enough that they could cause calamity if they were to hit 💥 <a href="https://spacey.space/tags/Earth" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Earth</a>" <a href="https://www.washingtonpost.com/technology/2022/10/24/nasa-asteroid-telescope" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.washingtonpost.com/technology/2022/10/24/nasa-asteroid-telescope</a><a href="https://spacey.space/tags/ESA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ESA</a> : <a href="https://spacey.space/tags/Asteroid" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Asteroid</a> danger explained <a href="https://www.esa.int/ESA_Multimedia/Images/2018/06/Asteroid_danger_explained" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.esa.int/ESA_Multimedia/Images/2018/06/Asteroid_danger_explained</a><a href="https://spacey.space/tags/AsteroidThreat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AsteroidThreat</a>

Spaceflight 🚀"The YR4 episode is just the beginning for <a href="https://spacey.space/tags/astronomers" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astronomers</a> gaining the capability to see 🔭 these objects ☄️ before they come calling through our neck of the woods." <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 noreferrer" translate="no" target="_blank">https://arstechnica.com/space/2025/02/asteroid-2024-yr4-may-be-a-dud-but-we-will-soon-find-many-more-threats</a><a href="https://spacey.space/tags/AsteroidThreat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AsteroidThreat</a> <a href="https://spacey.space/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomy</a> <a href="https://spacey.space/tags/2024YR4" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#2024YR4</a>

Spaceflight 🚀<a href="https://mastodon.social/@ScottManleyHimself" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@ScottManleyHimself</a> : there's a real chance we can't honestly know the answer by April when it gets too faint to observe until 📆 2028 <a href="https://www.youtube.com/watch?v=Esk1hg2knno" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.youtube.com/watch?v=Esk1hg2knno</a><a href="https://spacey.space/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomy</a> <a href="https://spacey.space/tags/precision" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#precision</a> <a href="https://spacey.space/tags/AsteroidThreat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AsteroidThreat</a> <a href="https://spacey.space/tags/2024YR4" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#2024YR4</a>

Spaceflight 🚀<a href="https://spacey.space/tags/ESA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ESA</a> : <a href="https://spacey.space/tags/2024YR4" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#2024YR4</a> ☄️ is estimated to be between 40 m and 100 m wide 📏. It is too early to determine where exactly on Earth a potential impact 💥 could occur. The <a href="https://spacey.space/tags/asteroid" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#asteroid</a> is currently moving away from Earth in almost a straight line, making it difficult to accurately determine its orbit by studying how its trajectory curves over time. It is possible it will fade from view 🔭 before we are able to entirely rule out any chance of impact in 2032 <a href="https://www.esa.int/Space_Safety/Planetary_Defence/ESA_actively_monitoring_near-Earth_asteroid_2024_YR4" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.esa.int/Space_Safety/Planetary_Defence/ESA_actively_monitoring_near-Earth_asteroid_2024_YR4</a><a href="https://spacey.space/tags/AsteroidThreat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AsteroidThreat</a>

Spaceflight 🚀<a href="https://spacey.space/tags/ESA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ESA</a> has determined that the <a href="https://spacey.space/tags/asteroid" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#asteroid</a> ☄️ will pass the Earth on 📆 22 December 2032 at a distance of almost 136,000 kilometers – with an <a href="https://spacey.space/tags/inaccuracy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#inaccuracy</a> of 311,000 kilometers. 🤔 <a href="https://www.heise.de/en/news/Potentially-dangerous-asteroid-2024-YR-The-risk-continues-to-rise-very-slowly-10273047.html" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.heise.de/en/news/Potentially-dangerous-asteroid-2024-YR-The-risk-continues-to-rise-very-slowly-10273047.html</a><a href="https://spacey.space/tags/2024YR4" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#2024YR4</a> <a href="https://spacey.space/tags/AsteroidThreat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AsteroidThreat</a>

Spaceflight 🚀When discovered in 2004, <a href="https://spacey.space/tags/Apophis" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Apophis</a> ☄️ was thought to have a 2.7% chance of colliding with Earth in 📆 2029. In 2021, <a href="https://spacey.space/tags/NASA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NASA</a> ruled out these collision 💥 risks after refining its trajectory, but recent simulations have revived some concerns. <a href="https://spacey.space/tags/2024YR4" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#2024YR4</a> will be too distant for radar observations until 📆 2032, when it could strike 💥 Earth. <a href="https://spacey.space/tags/Astronomers" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomers</a> need more data to refine its exact orbit <a href="https://www.forbes.com/sites/jamiecartereurope/2025/02/02/a-deadly-asteroid-may-strike-earth-in-2032---what-to-know" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.forbes.com/sites/jamiecartereurope/2025/02/02/a-deadly-asteroid-may-strike-earth-in-2032---what-to-know</a><a href="https://spacey.space/tags/AsteroidThreat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AsteroidThreat</a>

Spaceflight 🚀<a href="https://spacey.space/tags/AsteroidThreat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AsteroidThreat</a> <a href="https://www.youtube.com/watch?v=kKFc3Np2VUw" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.youtube.com/watch?v=kKFc3Np2VUw</a>

Spaceflight 🚀<a href="https://spacey.space/tags/ESA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ESA</a> "By the time the astrometry reached the impact 💥 monitoring systems, the impact had already happened." <a href="https://www.space.com/the-universe/asteroids/asteroid-that-hit-earth-hours-after-being-detected-was-3rd-imminent-impactor-of-2024" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.space.com/the-universe/asteroids/asteroid-that-hit-earth-hours-after-being-detected-was-3rd-imminent-impactor-of-2024</a><a href="https://spacey.space/tags/AsteroidThreat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AsteroidThreat</a>

Spaceflight 🚀2013 ☄️ <a href="https://www.youtube.com/watch?v=gRrdSwhQhY0" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.youtube.com/watch?v=gRrdSwhQhY0</a><a href="https://spacey.space/tags/AsteroidThreat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AsteroidThreat</a> <a href="https://spacey.space/tags/Chelyabinsk" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Chelyabinsk</a>

Spaceflight 🚀List of predicted 🔭 <a href="https://spacey.space/tags/asteroid" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#asteroid</a> ☄️ impacts on Earth 🌏 <a href="https://en.wikipedia.org/wiki/List_of_predicted_asteroid_impacts_on_Earth" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://en.wikipedia.org/wiki/List_of_predicted_asteroid_impacts_on_Earth</a><a href="https://spacey.space/tags/AsteroidThreat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AsteroidThreat</a>

Spaceflight 🚀<a href="https://spacey.space/tags/Asteroid" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Asteroid</a> ☄️ impact 💥 simulation <a href="https://neal.fun/asteroid-launcher" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://neal.fun/asteroid-launcher</a><a href="https://spacey.space/tags/AsteroidThreat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AsteroidThreat</a>

Spaceflight 🚀<a href="https://astrodon.social/@VRubinObs" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@VRubinObs</a> 🔭 Today, <a href="https://spacey.space/tags/astronomers" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astronomers</a> are aware of only about 40 percent 📊 of potentially hazardous <a href="https://spacey.space/tags/asteroids" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#asteroids</a> ☄️ - close-flying objects that are large enough to cause continent-wide destruction if they were to impact 💥 Earth. "The idea is, if there is an object like that, we want to find it while it’s maybe 40 or 50 years out, because that gives us enough time to figure out how we’re going to deflect it.” <a href="https://www.smithsonianmag.com/science-nature/this-revolutionary-new-observatory-will-locate-threatening-asteroids-and-millions-of-galaxies-180984514/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.smithsonianmag.com/science-nature/this-revolutionary-new-observatory-will-locate-threatening-asteroids-and-millions-of-galaxies-180984514/</a><a href="https://spacey.space/tags/Observatory" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Observatory</a> <a href="https://spacey.space/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomy</a> <a href="https://spacey.space/tags/AsteroidThreat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AsteroidThreat</a>

Spaceflight 🚀While humankind could deflect an incoming <a href="https://spacey.space/tags/asteroid" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#asteroid</a> by nuking it, using lasers to vaporise it, sending a space “tractor” to drag it off course, or bumping it into a new direction, none of it will be of any use if we don’t first spot 🔭 the threat. “It’s 100 per cent certain we’ll be hit, but we’re not 100 per cent certain when” <a href="https://www.news.com.au/technology/science/space/planetary-defenders-humanitys-greatest-challenge-to-save-the-world-from-catastrophic-asteroid-impacts/news-story/d3e2e2d71372a3d90cb02aa810f5ef60" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.news.com.au/technology/science/space/planetary-defenders-humanitys-greatest-challenge-to-save-the-world-from-catastrophic-asteroid-impacts/news-story/d3e2e2d71372a3d90cb02aa810f5ef60</a><a href="https://spacey.space/tags/AsteroidThreat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AsteroidThreat</a>

Spaceflight 🚀Only eight <a href="https://spacey.space/tags/asteroids" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#asteroids</a> ☄️ have ever been detected before impact 💥 with <a href="https://spacey.space/tags/Earth" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Earth</a>’s atmosphere. The first of these discoveries took place in 📆 2008, and four were detected in just the last two years <a href="https://www.esa.int/Space_Safety/Planetary_Defence/Asteroid_2024_BX1_spotted_three_hours_before_impact" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.esa.int/Space_Safety/Planetary_Defence/Asteroid_2024_BX1_spotted_three_hours_before_impact</a><a href="https://spacey.space/tags/Asteroid" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Asteroid</a> danger explained : "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." <a href="https://www.esa.int/ESA_Multimedia/Images/2018/06/Asteroid_danger_explained" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.esa.int/ESA_Multimedia/Images/2018/06/Asteroid_danger_explained</a><a href="https://spacey.space/tags/ESA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ESA</a> <a href="https://spacey.space/tags/AsteroidThreat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AsteroidThreat</a>

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