Io shines at magnitude 5.0 in the night sky. The moons of the inner group move in eccentric, inclined orbits at about 11 million kilometers, and those of the outer group move in eccentric orbits at about 22 million kilometers which are retrograde to the planets rotation. Io (eye-oe, ao, Greek ) is the innermost of the four Galilean moons of Jupiter. The outer moons are in two groups of four each at about the same orbit radius. Ganymede does have a small metallic core, as evidenced by the fact that it has a magnetic field, but Callisto is apparently a largely undifferentiated mixture of rock and ice.Īdditional Data for the Galilean Moons Name Ganymede and Callisto are less dense, with water and water ice accounting for as much as half of their masses. Io and Europa have thick rocky mantles surrounding iron/iron sulfide cores. Their orbits are direct (in the same direction as the planet's rotation), their orbits are roughly circular, and they lie close to Jupiter's equatorial plane. They are referred to as the Galilean moons. The four largest moons are comparable to the Earth's Moon in size. Image credit NASA, Jet Propulsion Laboratory. Then Europa in center, then Ganymede and Callisto at the lower right. At upper left, the reddish Io is nearest Jupiter. The images are not to scale, but are in their relative positions. Jupiter's Moons Montage of Jupiter and the Galilean satellites Io, Europa, Ganymede and Callisto. Voyager photographs showed extensive lightning activity in the atmosphere of Jupiter, and uv photographs indicate auroral activity. Heat from Jupiter's 29,700☌ (53,500☏) core keeps the atmosphere churning. The Great Red Spot, larger than two Earths, rages like a hurricane in Jupiter's turbulent atmosphere. It is mostly composed of hydrogen and helium, but is thought to have a heavy element core on the order of 10 times the mass of the Earth. The Io moon distance from Jupiter is around 0.42 million kilometers.With over twice as much mass as all the other planets and moons combined, Jupiter still has 50 times too little mass to be a star. But before Io, there are four inner Jovian moons. The moon Io is the fifth moon from the planet Jupiter. Must Check:- Jupiter Moons: Facts, Names, Numbers & List Check below to know the all moons of Jupiter. Planet Jupiter has many moons (a total of 79 Jupiter moons). Simply the moon IO pronounce as – aai, oh. So, the Jupiter Moon Io is pronounced as two different letters I and O. Here regarding this moon, there is no ‘small letter L’, it the letter I. Because the ‘capital letter I’ looks like the ‘small letter L (l)’.
Well, people get confused about the letter I or L. Many people get confused about the pronunciation of Jupiter’s Io moon. Most of these plumes are made of sulfur and sulfur dioxide. The plumes of these Io’s volcanoes are quite high and reach up to 500 kilometers from the surface. Its tidal force is around 20,000 times stronger than our Earth faces due to our moon. Due to the tidal force, it has such a high rate of active volcanoes. It happens because of tidal heating, generated from the Io’s internal friction due to other Galilean moons and Jupiter itself. Jupiter’s moon Io is the most geologically active object in our solar system and currently, it has more than 400 active volcanoes. Must read:- Most Interesting facts about Planet Jupiter The water quantity is very less on this Jovian Moon unlike other moons in the solar system. But Jupiter Moon Io is primarily made of silicate rock with a molten iron or iron sulfide core. Most moons of the solar system are primarily made of water ice. Some of these mountains are higher than Mount Everest. The plumes of many volcanoes go up to 500 kilometers high. Currently, it has around 400 active volcanoes. IO is the most volcanically active object in our solar system. It is the fourth-largest moon in our solar system with a diameter of around 3643 kilometers. According to mythology, Zeus converted IO into a cow to hide his infidelity from his wife Hera. This moon was named after a priestess of Hera, IO. IO Moon Facts Jupiter’s moon Io was discovered on by Galileo Galilei with other Galilean Moons. Here in this article, you will know many facts and information about Jupiter Moon IO. Io is the densest moon of our solar system with a density of around 3.5 gm/cm3. The IO Moon of Jupiter has the most active volcanoes than any other object in our solar system. Io moon including other Galilean Moons was discovered in 1610 by Galileo Galilei.
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