JWST sighting of decameter main-belt asteroids and view on meteorite sources
Briefly

Asteroid discoveries are essential for planetary-defense efforts aiming to prevent impacts with Earth, including the more frequent megaton explosions from decameter impactors.
While large asteroids (100km) have remained in the main belt since their formation, small asteroids are commonly transported to the near-Earth object (NEO) population.
Due to the lack of direct observational constraints, their size-frequency distribution, which informs our understanding of NEOs, varies significantly among models.
This manuscript is an unedited version intended to give early access to its findings, which will undergo further editing before final publication.
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