asteroid/comet impacts – Lifeboat News: The Blog https://lifeboat.com/blog Safeguarding Humanity Tue, 18 Feb 2025 00:08:24 +0000 en-US hourly 1 https://wordpress.org/?v=6.7.2 Map reveals what will happen if asteroid hits most populated cities https://lifeboat.com/blog/2025/02/map-reveals-what-will-happen-if-asteroid-hits-most-populated-cities https://lifeboat.com/blog/2025/02/map-reveals-what-will-happen-if-asteroid-hits-most-populated-cities#respond Tue, 18 Feb 2025 00:08:24 +0000 https://lifeboat.com/blog/2025/02/map-reveals-what-will-happen-if-asteroid-hits-most-populated-cities

A terrifying interactive graphic reveals the damage the ‘city-destroying’ asteroid 2024 YR4 could cause to some of the world’s biggest cities.

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A ‘city-destroying’ asteroid has suddenly become more likely to hit Earth https://lifeboat.com/blog/2025/02/a-city-destroying-asteroid-has-suddenly-become-more-likely-to-hit-earth https://lifeboat.com/blog/2025/02/a-city-destroying-asteroid-has-suddenly-become-more-likely-to-hit-earth#respond Sat, 15 Feb 2025 12:08:13 +0000 https://lifeboat.com/blog/2025/02/a-city-destroying-asteroid-has-suddenly-become-more-likely-to-hit-earth

The odds of a ‘city-destroying’ asteroid hitting Earth in less than 10 years have risen.

Asteroid 2024 YR4 was found by NASA’s Asteroid Terrestrial-impact Last Alert System and it’s now at the top of NASA’s Sentry Risk Table and European Space Agency’s NEO (near Earth objects) impact Risk List.

For a full breakdown of the implications of the asteroid, head here.

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Asteroid Impact 2032 — Asteroid 2024 YR4 https://lifeboat.com/blog/2025/02/asteroid-impact-2032-asteroid-2024-yr4 https://lifeboat.com/blog/2025/02/asteroid-impact-2032-asteroid-2024-yr4#respond Fri, 07 Feb 2025 04:03:31 +0000 https://lifeboat.com/blog/2025/02/asteroid-impact-2032-asteroid-2024-yr4

Almost 2% chance for catastrophic impact in 7 years? What should we do?


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Asteroid impact simulation reveals climate and ecological disruptions https://lifeboat.com/blog/2025/02/asteroid-impact-simulation-reveals-climate-and-ecological-disruptions https://lifeboat.com/blog/2025/02/asteroid-impact-simulation-reveals-climate-and-ecological-disruptions#comments Thu, 06 Feb 2025 14:23:08 +0000 https://lifeboat.com/blog/2025/02/asteroid-impact-simulation-reveals-climate-and-ecological-disruptions

A new climate modeling study published in the journal Science Advances by researchers from the IBS Center for Climate Physics (ICCP) at Pusan National University in South Korea presents a new scenario of how climate and life on our planet would change in response to a potential future strike of a medium-sized (~500 m) asteroid.

The solar system is full of objects with near-Earth orbits. Most of them do not pose any threat to Earth, but some of them have been identified as objects of interest with non-negligible collision probabilities. Among them is the asteroid Bennu with a diameter of about 500 m, which—according to recent studies—has an estimated chance of 1 in 2700 of colliding with Earth in September 2182. This is similar to the probability of flipping a coin 11 times in a row with the same outcome.

To determine the potential impacts of an asteroid strike on our climate system and on and plankton in the ocean, researchers from the ICCP set out to simulate an idealized collision scenario with a medium-sized asteroid using a state-of-the-art climate model.

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Scientists Simulated Bennu Crashing to Earth in September 2182. It’s Not Pretty https://lifeboat.com/blog/2025/02/scientists-simulated-bennu-crashing-to-earth-in-september-2182-its-not-pretty https://lifeboat.com/blog/2025/02/scientists-simulated-bennu-crashing-to-earth-in-september-2182-its-not-pretty#respond Thu, 06 Feb 2025 14:19:26 +0000 https://lifeboat.com/blog/2025/02/scientists-simulated-bennu-crashing-to-earth-in-september-2182-its-not-pretty

Simulations of a potential impact by a hill-sized space rock event next century have revealed the rough ride humanity would be in for, hinting at what it’d take for us to survive such a catastrophe.

It’s been a long, long time since Earth has been smacked by a large asteroid, but that doesn’t mean we’re in the clear. Space is teeming with rocks, and many of those are blithely zipping around on trajectories that could bring them into violent contact with our planet.

One of those is asteroid Bennu, the recent lucky target of an asteroid sample collection mission. In a mere 157 years – September of 2,182 CE, to be precise – it has a chance of colliding with Earth.

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Chances of ‘city-destroying’ asteroid hitting Earth have increased https://lifeboat.com/blog/2025/02/chances-of-city-destroying-asteroid-hitting-earth-have-increased https://lifeboat.com/blog/2025/02/chances-of-city-destroying-asteroid-hitting-earth-have-increased#respond Mon, 03 Feb 2025 19:50:34 +0000 https://lifeboat.com/blog/2025/02/chances-of-city-destroying-asteroid-hitting-earth-have-increased

Link :


Astronomers have also calculated a predicted impact zone that stretches from South America across the Atlantic Ocean to sub-Saharan Africa.

The asteroid has the potential to cause significant damage, especially if it lands in a densely populated area like a major city due to it being the size of another space rock that hit Earth in 1908 with a blast equivalent to detonating 50 million tons of TNT.

Though estimates suggest a very small increase in the likelihood of impact, astronomer and professor of planetary sciences at the Massachusetts Institute of Technology (MIT) Richard P Binzel told DailyMail.com that it is nothing to worry about.

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Pristine asteroid samples reveal secrets of the ancient solar system https://lifeboat.com/blog/2025/02/pristine-asteroid-samples-reveal-secrets-of-the-ancient-solar-system https://lifeboat.com/blog/2025/02/pristine-asteroid-samples-reveal-secrets-of-the-ancient-solar-system#respond Mon, 03 Feb 2025 09:27:17 +0000 https://lifeboat.com/blog/2025/02/pristine-asteroid-samples-reveal-secrets-of-the-ancient-solar-system

Curtin University researchers have gained an unprecedented glimpse into the early history of our solar system through some of the most well-preserved asteroid samples ever collected, potentially transforming our understanding of planetary formation and the origins of life.

Experts from Curtin’s School of Earth and Planetary Sciences were selected to be among the first in the world to inspect samples collected during NASA’s seven-year, OSIRIS-REx mission to the ancient asteroid Bennu.

Asteroid Bennu is thought to be made of rubble fragments from a 4.5-billion-year-old parent body, containing materials that originated beyond Saturn, which was destroyed long ago in a collision with another object.

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A ‘city-killer’ asteroid might hit Earth—how worried should we be? https://lifeboat.com/blog/2025/02/a-city-killer-asteroid-might-hit-earth-how-worried-should-we-be https://lifeboat.com/blog/2025/02/a-city-killer-asteroid-might-hit-earth-how-worried-should-we-be#respond Sun, 02 Feb 2025 03:15:49 +0000 https://lifeboat.com/blog/2025/02/a-city-killer-asteroid-might-hit-earth-how-worried-should-we-be

A colossal explosion in the sky, unleashing energy hundreds of times greater than the Hiroshima bomb. A blinding flash nearly as bright as the sun. Shockwaves powerful enough to flatten everything for miles.

It may sound apocalyptic, but a newly detected asteroid nearly the size of a football field now has a greater than one percent chance of colliding with Earth in about eight years.

Such an impact has the potential for city-level devastation, depending on where it strikes.

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MIT Unveils Breakthrough in Detecting Tiny Asteroids, Boosting Planetary Defense https://lifeboat.com/blog/2024/12/mit-unveils-breakthrough-in-detecting-tiny-asteroids-boosting-planetary-defense https://lifeboat.com/blog/2024/12/mit-unveils-breakthrough-in-detecting-tiny-asteroids-boosting-planetary-defense#respond Fri, 13 Dec 2024 08:08:31 +0000 https://lifeboat.com/blog/2024/12/mit-unveils-breakthrough-in-detecting-tiny-asteroids-boosting-planetary-defense

Researchers at MIT have developed a method to detect small asteroids in the main asteroid belt, significantly improving our ability to spot objects as little as 10 meters across.

This new technique, which identified 138 space rocks ranging from bus-to stadium-sized, allows for earlier detection and better tracking of potential near-Earth objects, enhancing planetary defense. The approach, using data from telescopes initially aimed at exoplanets, has uncovered over a hundred new asteroids, with implications for understanding asteroid origins and collision processes.

Advancements in Asteroid Detection.

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MIT astronomers find the smallest asteroids ever detected in the main belt https://lifeboat.com/blog/2024/12/mit-astronomers-find-the-smallest-asteroids-ever-detected-in-the-main-belt https://lifeboat.com/blog/2024/12/mit-astronomers-find-the-smallest-asteroids-ever-detected-in-the-main-belt#respond Tue, 10 Dec 2024 00:03:17 +0000 https://lifeboat.com/blog/2024/12/mit-astronomers-find-the-smallest-asteroids-ever-detected-in-the-main-belt

The asteroid that extinguished the dinosaurs is estimated to have been about 10 kilometers across. That’s about as wide as Brooklyn, New York. Such a massive impactor is predicted to hit Earth rarely, once every 100 million to 500 million years.

In contrast, much smaller asteroids, about the size of a bus, can strike Earth more frequently, every few years. These “decameter” asteroids, measuring just tens of meters across, are more likely to escape the main asteroid belt and migrate in to become near-Earth objects. If they make impact, these small but mighty space rocks can send shockwaves through entire regions, such as the 1908 impact in Tunguska, Siberia, and the 2013 asteroid that broke up in the sky over Chelyabinsk, Urals. Being able to observe decameter main-belt asteroids would provide a window into the origin of meteorites.


The team’s detection method, which identified 138 space rocks ranging from bus-to stadium-sized, could aid in tracking potential asteroid impactors.

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