Jupiter’s Moon, Io - Science@NASA
Oct 2, 1992 · Jupiter's Moon, Io, In Ultraviolet Light This is a Hubble Space Telescope image of the geologically active trailing hemisphere of the Jovian moon lo. The ultraviolet light image as taken with the European Space Agency's Faint Object Camera on March 15, 1992, when lo was 414 million miles from Earth.
Very High Resolution View of Io's Surface
Oct 26, 2000 · This mosaic of images acquired by NASA's Galileo spacecraft on February 22, 2000, shows the highest resolution view ever obtained of the surface of Jupiter's volcanic moon Io, 5 to 6 meters (16 to 20 feet) per picture element.
Jupiter's Moon, Io, Sweeps Across the Planet; Io Volcano Spews …
Apr 20, 1999 · Io zips around Jupiter in 1.8 days, whereas the moon circles Earth every 28 days. The conspicuous black spot on Jupiter is Io's shadow and is about the size of the moon itself (2,262 miles or 3,640 kilometers across). This shadow sails across the face of Jupiter at 38,000 mph (17 kilometers per second). The smallest details visible on Io and ...
Rare Hubble Portrait of Io and Jupiter - NASA Science
Oct 4, 1996 · The conspicuous black spot on Jupiter is Io's shadow. This shadow is about the size of Io (2,262 miles or 3,640 kilometers across) and sweeps across the face of Jupiter at 38,000 mph (17 kilometers per second). The smallest details seen on Io and Jupiter are about 100 miles across. Bright patches visible on Io are regions of sulfur dioxide frost.
Surface Changes on Io | NASA Jet Propulsion Laboratory (JPL)
Dec 12, 2024 · This global map of Jupiter's moon Io – derived from images acquired during the 55th, 57th, 58th, and 60th close passes of the gas giant by NASA's Juno spacecraft – shows the volcanic activity and other surface changes detected by the JunoCam instrument.
NASA reveals 'glass-smooth lake of cooling lava' on surface of Jupiter …
Apr 21, 2024 · Juno's instruments have determined that Io's surface is smoother than the surfaces of Jupiter's three other Galilean moons (Europa, Ganymede and Callisto). Io is slightly larger than...
NASA Captures 'Most Intense Volcanic Eruption Ever' on Jupiter's Moon Io
Jan 31, 2025 · New images from NASA's Juno spacecraft make Io's nature clear. It's the most volcanically active world in the Solar System, with more than 400 active volcanoes. Juno has performed multiple flybys of Io, and images from its latest one show an enormous hotspot near the moon's south pole.
NASA's Juno probe captures amazing views of Jupiter's volcanic moon Io ...
Apr 19, 2024 · Juno came within about 930 miles (1,500 kilometers) of Io's roiling surface during the two flybys, which occurred in December 2023 and February 2024. Mission team members processed the...
NASA Releases Incredible Video of Reflective Lava Lake on Jupiter…
Apr 24, 2024 · Io orbits Jupiter at a distance of just 217,000 miles above the planet's cloud tops — which is slightly farther than the distance between the Moon and the Earth. However, Jupiter's diameter is ...
Io | Surface, Volcanoes, & Facts | Britannica
Feb 7, 2025 · Io, innermost of the four large moons (Galilean satellites) discovered around Jupiter by the Italian astronomer Galileo in 1610. It is the most volcanically active body in the solar system. As many as 300 volcanoes may be active on the satellite at a given time.