Nereid: Neptune’s lone survivor of an ancient moon-wide chaos

TL;DR Summary
JWST data suggest Neptune’s moon Nereid may be the only intact remnant of Neptune’s primordial moon system, surviving the disruptive arrival of Triton over 4 billion years ago. Its surface composition is more like regular satellites than Kuiper Belt objects, challenging the idea that it was captured. Computer simulations indicate a roughly 25% chance that some moons could survive the Triton encounter, and further JWST observations or a future Neptune mission could confirm this scenario.
Topics:science#james-webb-space-telescope#neptune#nereid#science-space#solar-system-formation#triton
- Astronomers believe Neptunian moon is lone intact survivor of ancient collision CNN
- This Moon of Neptune Might Have Survived a Wrecking-Ball Event The New York Times
- Neptune’s mysterious moon Nereid may be an original, study shows AP News
- An ancient moonpocalypse may explain Neptune’s odd moon Nereid Science News
- Ancient collision may have created Neptune’s lunar system. New study suggests one moon was unscathed news8000.com
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