Io’s very thin atmosphere is mostly sulfur dioxide, but the moon’s volcanism helps pump out trace amounts of silicon monoxide, silicon dioxide, iron monoxide and even gaseous salt, potassium and iron. Luna is an alien (and not from the moon like Usagi) Its true In the original Sailor Moon manga, our favorite talking anime cats are actually aliens. Ios volcanoes are in a constant state of eruption. Everest, which stands a mere 8,848 meters (29,029 feet) tall.ĥ) Strange ingredients in the atmosphere. Io is the most volcanically active moon in the solar system and has over 400 moons. That’s a far higher climb than the one up Earth’s Mt. Io’s active geology builds not only supervolcanoes but super-size mountains up to 16,764 meters (55,000 feet) tall. Hot spots discovered by the Galileo spacecraft showed temperatures of up to 1,610C (2,910F).Ĥ) Tallest mountains in the solar system. Pop Culture Resources Jupiter's moon Io is the most volcanically active world in the Solar System, with hundreds of volcanoes, some erupting lava fountains dozens of miles (or kilometers) high. While the mean surface temperature of Io is quite frosty (-143C or -225.4F), things get hot near active volcanoes. It’s the energy generated by these tides, rather than internal heat, that powers Io’s geologic activity.ģ) Hottest temperatures outside the sun. The tidal forces are exerted in combination by Jupiter and two of its other large moons, Europa and Ganymede. Those are tides pushing and pulling the rocky surface (for comparison’s sake, Earth’s ocean tides vary by no more than 18 meters or 60 feet). The Ionian volcano Loki, believed to be the solar system’s most powerful volcano, can spew out up to 1,000 square meters of lava each second.Ģ) Planetary tides of 100 meters (330 feet). Many of these moons are captured asteroids pulled in by the gravitational forces of Jupiter. They are the furthest from Jupiter and are substantially smaller objects. With more than 400 active volcanoes, Io doesn’t have the cratered surface common to so many other moons: powerful lava flows continually reshape the landscape. Outer moons The other moons are known as irregular satellites because of their eccentric and distant orbit paths. Four of Jupiter 's moons: Io, Europa, Ganymede and Callisto known as the Galilean moons were the first celestial objects to be discovered orbiting an object other than the sun or Earth when. Io Jupiter's Moon: Learn Important Facts About Io - One of the Many Moons of Jupiterġ2) Diameter (equatorial): 3,643 km, 2,264 milesġ5) Escape Velocity: 2.558 km/s, 1.589 miles/sġ6) Surface temperature (mean and max): -143C to -73C, -225.4F to -99.4Fġ8) Atmospheric composition: sulfur dioxide.ġ) The most volcanically active body in the solar system. Formed: Around 4.
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