Webb has filled in many gaps left by Voyager 2, the only spacecraft to visit the planet. In 2022, the telescope captured Neptune's ghostly rings and revealed a band of clouds around a known vortex at the planet's south pole for the first time.

Neptune's elusive auroras have been finally revealed thanks to the James Webb Space Telescope. Astronomers scouring through the combined data from Webb and the Hubble telescope have discovered the presence of trihydrogen cation (H3+), which is created in auroras .

NASA’s James Webb telescope is offering a new look at Neptune’s aurora, leading to a new mystery involving the eighth planet from the sun.