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Planetary Defense

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Scientists Detail Nuclear Backstop for Asteroid That Could Strike the Moon in 2032

A NASA‑affiliated analysis estimates about a 4% lunar‑impact chance, warning of debris that could endanger satellites and crews.

Hubble Captures Coma of Interstellar Comet 3I/ATLAS as Experts Uphold Natural Origin

DART Ejecta Analysis Reveals Boulder Clusters Could Tilt Dimorphos’s Orbit