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r/Astronomy

Asteroid impact threat estimates improved for the Earth and the Moon [article about 2024 YR4]

[https://www.helsinki.fi/en/news/space/asteroid-impact-threat-estimates-improved-earth-and-moon](https://www.helsinki.fi/en/news/space/asteroid-impact-threat-estimates-improved-earth-and-moon) The article said the probability of hitting earth is below 0.001% (we already knew that), but it also says the probability of hitting the Moon is now 4% (it was 1.7% in [February 2025](https://blogs.nasa.gov/planetarydefense/2025/02/24/latest-calculations-conclude-asteroid-2024-yr4-now-poses-no-significant-threat-to-earth-in-2032-and-beyond/)). Still not much, but I think more observations are needed to make sure it does not hit the Moon. Academy Professor Karri Muinonen said: "Should the asteroid impact the Moon, the Earth-Moon system could be clouded with particles detached from the Moon and the asteroid, potentially threatening the human space infrastructure and operations"

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April 2, 2025 at 4:06 PM18 upvotesView on Reddit