More Information and Facts about Io.

Size: 3,632 km (2,257miles) wide, slightly larger than Earth's moon.
Distance From Jupiter: 422,000 km (262,230mi)
Io is made of rock with a melted metal core
Io's hundreds of volcanoes spew 11 billion tons of lave per year! What causes these huge eruptions?

The gravity of nearby Jupiter and other moons tugs at Io. The strong pull cause Io to stretch and bend. This motion causes friction (rubbing) inside Io. When you rub your hands together quickly for 30 seconds. Friction causes heat! The heat melts most of Io's rock. The melted rock flows up and shoots out as lava. The heat also explodes underground gas that makes lava spray really high! ( Uses resources and organized).

Facts about Io.

At one-third the size of earth, Io is the most volcanically active body in the solar system. The nearest to Jupiter of the four large moons, Io's surface is full with volcanoes which erupt frequently, lava, dust and gases onto its landscape. Io is believed to have a metallic core. Its surface is mostly flat plains, but mountains as high as 9 kilometers have been observed by scientists on Earth.

Io's Deadly feature ( Extra )

Before the astronomers visited Jupiter, if you had described Io you'll probably think of volcanoes. Jupiter's strange moon is literally bursting with volcanoes. Dozens of active vents pepper the landscape with volcanic rings the size of California. The volcanoes themselves are the hottest spots in the solar system, with temperatures exceeding 1800 Kelvin (1527 Celsius) about 1/3 the temperature of the surface of the Sun! The flaming hot plumes which rise as much as 500 kilometers into space are so large they can be seen from Earth by the Hubble Space Telescope.

These high-rising, seem to be made up of, not hot lava, but frozen sulfur dioxide. For a world dominated by active volcanoes, it's curious that Io is also very, very cold. The ground just around the volcanic vents is literally sizzling, but most of Io's surface is 150 degrees or more below 0 Celsius which is astonishing.

Io accretion

First there is a Nebula of hot gas and dust from a super nova explosion. (Particles) As cloud cools, atoms move slower and clump together. Results of planetestimal accretion begins, small objects collide and stick together to form larger bodies. Protoplanet, big enough to pull more in, as it almost becomes a planet. Stays as a protoplanet because Jupiter pulls it to its orbit. Finally it was discovered by Galilieo's satellite and was named Io.

Planet?

Pluto is no longer a planet. 

Considering it meets most terms it is missing a important piece of governing objects in his neighborhood. It orbits the sun it is spherical. We now know that pluto is part of a Kuiper belt. It is past Neptune and is made of frozen gas and ice. My moon

, Io is not considered a planet. It orbits the planet Jupiter not a star.

Diameter

Jupiter's moon Io [EYE-oh or EE-oh] is one of the most exotic places in the solar system. It is the most volcanic body known, with lava flows, lava lakes, and giant calderas covering its sulfurous landscape. It has fowling with volcanic geysers, spewing flaming hot plumes to over 500 kilometers high. Its mountains are much taller than those on Earth. Heights of 16 kilometers (52,000 feet). Orbits closer to Jupiter's cloud tops than the moon does to Earth. Shoots about 1,000 kilograms (1 ton) per second of volcanic gases and other materials. Io acts as an electrical generator as it moves through Jupiter's magnetic field, developing 400,000 volts across its diameter and generating an electric current of 3 million amperes that flows along the magnetic field to the planet's ionosphere. 3636 kilometer in diameter. Very close to the moon.

1.3 million times 48 is 62.4 moons

48 moons can fit in Earth

1.3 millions Earths fit into sun

62.4 million moons can fit into sun. So you can fit about 62.5million Ios' in the sun.