NASA’s DART mission (2022) crashed a spacecraft into the moonlet Dimorphos and follow-up stellar-occultation measurements show the binary's orbit around the Sun slowed measurably, proving a human-made kinetic strike can change an asteroid's motion. Researchers collected 22 post-impact occultation timings (including amateur observations) and infer a ~150 millisecond heliocentric orbital slowdown, confirming both the technique and the need for long-term tracking.
— This validates kinetic deflection as an operational planetary-defense tool and raises policy questions about funding, international coordination, legal authority to alter small bodies, and citizen-science roles in monitoring.
Jake Currie
2026.03.09
90% relevant
This article is the same empirical story: NASA's DART impact measurably altered Dimorphos/Didymos' orbit (shortened it by ~33 minutes), providing the data point that underpins the existing idea that kinetic impact is a viable planetary‑defense method (Science publication, NASA quote, and the measured orbital change).
EditorDavid
2026.03.08
100% relevant
Event: NASA’s DART spacecraft impacted Dimorphos in 2022; Evidence: occultation-derived timing shifts and 22 post-impact measurements showing a measurable orbital slowdown.
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