Does io moon have water8/11/2023 The findings suggest that icy exomoons probably don’t orbit all that close to massive planets. In just a few million years, Io could have lost as much water as Ganymede may hold today, which may be more than 25 times the amount in Earth’s oceans.Ī coruscant Jupiter probably didn’t remove significant amounts of ice from Europa or Ganymede, the researchers found, unless Jupiter was brighter than simulated or the moons orbited closer than they do today. And that atmosphere, hardly restrained by the moon’s weak gravity, would have readily escaped into space. Io's volcanism is responsible for many of its unique features. Most of Io's surface is composed of extensive plains with a frosty coating of sulfur and sulfur dioxide. That water would have progressively evaporated into an atmosphere. Unlike most moons in the outer Solar System, which are mostly composed of water ice, Io is primarily composed of silicate rock surrounding a molten iron or iron sulfide core. Even though Io has nearly the same size (3643 km across) and density (3.53X water) as the Moon, Io is the most geologically active world in the solar system. The surface must be very young because something has erased the impact craters. “That’s Earthlike temperatures.”Īny ice present on Io at that time, roughly 4.5 billion years ago, probably would have melted into an ocean. The liquid and vapor (water in the kettle and sulfur in Io) are hot and under pressure and you get a plume of steam. Io has no impact craters even though it has a rocky, solid surface. During its first few million years, Io’s surface temperature may have exceeded 26° Celsius under Jupiter’s glow, Bierson said. The team used computers to simulate how an infant Jupiter may have warmed its moons, starting with Io, the closest of the four. The constitutions of these four bodies obey a trend: The more distant the moon from Jupiter, the more ice-rich its body is.īierson and his colleagues hypothesized this pattern was a legacy of Jupiter’s past radiance. Jupiters moon Io EYE-oh or EE-oh is one of the most exotic places in the solar system. Galileo Finds Giant Iron Core in Jupiters Moon Io. That radiance would have been inescapable for the giant planet’s moons, the largest of which are volcanic Io, ice-shelled Europa, aurora-cowled Ganymede and crater-laden Callisto ( SN: 12/22/22, SN: 4/19/22, SN: 3/12/15). Jupiters Europa Harbors Possible 'Warm Ice' or Liquid Water.
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