One of Jupiter's moons known as Io is well known for its intense geological activity, as it has more than 400 active volcanoes, making it the most volcanically active body in the s ...
Dec. 9, 2024 — A NASA Hubble Space Telescope observation program called OPAL (Outer Planet Atmospheres Legacy) obtains long-term baseline observations of Jupiter, Saturn, Uranus, and Neptune in ...