Io (moon) - Wikipedia
WEBSlightly larger than Earth's moon, Io is the fourth-largest moon in the Solar System, has the highest density of any moon, the strongest surface gravity of any moon, and the lowest amount of water by atomic ratio of any known astronomical object in the Solar System.
Io Facts - Science@NASA
WEBIo can develop 400,000 volts across itself and create an electric current of 3 million amperes. This current takes the path of least resistance along Jupiter's magnetic field lines to the planet's surface, creating lightning in Jupiter's upper atmosphere.
Io: A guide to Jupiter's volcanic moon | Space
WEBOct 26, 2022 · Io — Jupiter's fifth moon — is the most volcanically active body in the solar system. Io's surface is peppered with hundreds of volcanoes, some spewing sulfurous plumes hundreds of miles...
Io | Surface, Volcanoes, & Facts | Britannica
WEBSep 13, 2024 · Io is about 3,640 km (2,260 miles) in diameter, a little larger than Earth ’s Moon. Its average density of about 3.52 grams per cubic cm is characteristic of rocks but not ices. Io has a very tenuous atmosphere, composed in large part of sulfur dioxide.
Io - NASA Science
WEBIo’s volcanoes are at times so powerful that they are seen with large telescopes on Earth, and Io even has lakes of molten silicate lava on its surface. Only slightly larger than Earth’s Moon, Io is about one-quarter the diameter of Earth itself.
New Map Reveals Secrets of Io, the Solar System's Most Volcanic Moon
WEBNov 20, 2023 · First, this moon of Jupiter is the most volcanic object in the known universe. Its surface is festooned with so many lava-spewing calderas that it resembles an oven-baked cheese pizza; its...
Io Moon Facts - Space Facts
WEBIo is made mostly of silicate rocks, and its surface is painted with sulfur particles from the volcanoes and frosts that are created as the atmospheric gases freeze out and fall to the ground. Robotic missions to Io could study its volcanism in closer detail.
Io, moon of Jupiter - The Solar System on Sea and Sky
WEBIo is the only body in the Solar System besides the Earth known to have active volcanoes. This mosaic image of Io's surface was assembled from images acquired by the Voyager 1 and Galileo spacecraft. It shows the unique and …
This is our best look yet at Io, the solar system's most volcanic …
WEBJul 18, 2019 · A volcanic plume erupts from the surface of Io, Jupiter's third largest moon and the most geologically active body in the solar system, in a picture taken by the Galileo spacecraft.
Io, Jupiter’s chaotic volcano moon | The Planetary Society
WEBIn December 2022, Juno completed a close flyby of Io, which yielded a stunning infrared view of the moon’s volcanic surface and lava lakes. The Juno team plans to conduct more flybys in 2023 and 2024 in hopes of unraveling more of Io’s many mysteries.
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