Science ❯ Astronomy ❯ Planetary Systems ❯ Kuiper Belt Objects

Exo-Dwarf Planets

Hubble Spots White Dwarf Devouring Icy, Nitrogen-Rich Exo‑Pluto Fragment

Ultraviolet measurements with Hubble’s Cosmic Origins Spectrograph reveal a water‑dominated, Kuiper‑belt‑analog composition and set up JWST observations to probe molecular signatures.