New Research Suggests Single Asteroid Impact Shaped Mars' Moon Deimos

AI-generated NewsSnap summary based on source reporting.
Published: 2026-08-26
Category: science
Source: ScienceDaily (citing University of Bern)
Original source

Scientists, combining computer simulations with ESA's Hera spacecraft observations, suggest a single asteroid impact could explain the large southern depression and smooth surface of Mars' moon Deimos. This research indicates a roughly 320-meter asteroid distributed debris without shattering the moon, with new Hera data supporting Deimos's porous and fragile nature. This offers new insights into lunar formation.

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