Anonymousabout 11 hours ago
New James Webb Space Telescope observations published in Science Advances reveal that Neptune's moon Nereid is likely the sole intact survivor of an ancient satellite system destroyed when Triton — a captured Kuiper Belt Object — crashed into Neptune's orbit billions of years ago. The findings, led by Caltech researcher Matthew Belyakov, show Nereid's composition is inconsistent with a Kuiper Belt origin but matches regular satellites around Uranus, rewriting our understanding of Neptune's chaotic early history.