Science
One of Neptune's 16 moons is not like the others, James Webb telescope finds — and it could be key to fully understanding the solar system
Key Points
Nereid (inset) may be the only moon of Neptune (background) that was around when the planet first formed, a new JWST study hints. (This composite image is not to scale).
Nereid (inset) may be the only moon of Neptune (background) that was around when the planet first formed, a new JWST study hints. (This composite image is not to scale).