Neptune’s Moon Nereid May Be Lone Survivor of an Ancient Cosmic Massacre
Neptune's moon Nereid is believed to be the only survivor of a violent cosmic event caused by the entry of Triton into the planet's orbit. Researchers suggest that Triton's arrival billions of years ago led to the destruction of Neptune's original moons, leaving Nereid as the last remaining satellite. This finding sheds light on the chaotic history of the solar system and the evolution of Neptune's moon system.
- ▪Neptune's largest moon, Triton, disrupted the planet's original moon system when it entered orbit.
- ▪Nereid, the third largest moon of Neptune, has the most eccentric orbit of any moon in the solar system.
- ▪Recent research indicates that Nereid may have survived a catastrophic event that destroyed Neptune's original set of moons.
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- ▪ Neptune's Moon Nereid Might Be the Sole Intact Survivor of an Ancient Lunar Collision — Smithsonian Magazine
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| Original publisher | Gizmodo |
| Canonical URL | https://gizmodo.com/neptunes-moon-nereid-may-be-lone-survivor-of-an-ancient-cosmic-massacre-2000762746 |
| Publication time | Fri, 22 May 2026 21:15:19 +0000 |
| Retrieval time | 2026-05-22T21:22:02.992Z |
| Last seen | 2026-05-22T21:22:02.992Z |
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| Cluster | _ritbE6mYpka · 2 stories |
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| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
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Opening excerpt (first ~120 words) tap to expand
The farthest planet from the Sun has a rather strange collection of moons in its orbit. That may be because Neptune’s largest moon, Triton, made a mess when it forced its way into the planet’s orbit billions of years ago. Now, scientists suggest that Neptune’s original set of moons was violently destroyed by Triton’s violent entry, except for one. Using data from the Webb space telescope, a team of researchers is suggesting that Neptune’s moon Nereid is the only survivor of the ancient lunar collision that rewrote the history of the planet’s orbital satellites. In a recent study published in Science Advances, the researchers provide new insight into the chaotic history of the solar system and how it changed over billions of years.
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