JWST Reveals Varied Origins Between Jupiter's Irregular Satellites
JWST observations of eight Jovian irregular satellites revealed variation in their mineral content, particularly among Himalia family members. Spectral analysis shows that while some satellites share similar colors, their specific chemical compositions—like hydroxyl-bearing materials—differ significantly. This suggests that the Himalia family likely originated from a stratified parent body with varied hydration states, challenging simple classification and offering new insights into the complex history of Jupiter's system.