Greater in mass than all the other planets combined, it's surrounded by dozens of moons
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Planet Jupiter: Facts About Its Size, Moons and Red Spot - Space.com  Nov 14, 2014 ... Jupiter is the largest planet in our solar system, and is known for its many ... more than twice as massive as all the other planets combined, and had ... Internal structure: A core less than 10 times Earth's mass surrounded by a layer of fluid ... greater impact on Jupiter's magnetosphere than before suggested.
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Galilean moons - Wikipedia  The Galilean moons are the four largest moons of JupiterIo, Europa, Ganymede, and Callisto. They were discovered by Galileo Galilei around January 1610 and were the first group of objects found to orbit another planet. ... Ganymede is the largest moon in the Solar System, and is even bigger than the planet Mercury.
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Why do some planets have more moons than others? | Reference.com  Some planets have more moons than others because they are larger and ... a greater space and may hold larger volumes of mass in their surrounding atmospheres. ... geography and physical composition of the planet and its moons (or lack of) ... A: The solar system is made up of the sun and all the planets, dwarf planets,...
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Chapter 8 The Parts of the Solar System  mass. As a result of it's huge mass, the sun exerts a powerful gravitational ... it is strong enough to hold all the planets and other distant objects in orbit. .... Mercury is not much larger than Earth's moon and has no moons ... Mercury is a planet of extremes, with a greater temperature range that any other .... planets combined!
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Jupiter - Educational facts and history of the planet Jupiter.  Jupiter is the fifth planet from the Sun and by far the largest.Jupiter is more than twice as massive as all the other planets combined (the mass of Jupiter ... the sky he discovered Jupiter's four large moons Io, Europa, Ganymede and Callisto ... This indicates that Jupiter's winds are driven in large part by its internal heat rather...
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Galilean moons - Wikipedia  From top to bottom: Io, Europa, Ganymede, Callisto. The Galilean moons are the four largest moons of JupiterIo, Europa, Ganymede, and Callisto. They were discovered by Galileo Galilei around January 1610 and were the first group of objects found to orbit another planet.
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The Outer Planets: Giant Planets: What Are They, and Where Are ...  The jovian planets rotate much faster than any of the terrestrial worlds. ... large moons, but the inner edge of the rings is still well above the planet's cloud tops. ... Jupiter with its moons Europa (closest in) and Callisto aligned with the planet's center. ... Jupiter and Saturn have similar interiors, with layers extending outward of...
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Moons of Saturn - Wikipedia  The moons of Saturn are numerous and diverse, ranging from tiny moonlets less than 1 ... Saturn, its rings and major icy moonsfrom Mimas to Rhea ... They include the seven major satellites, four small moons that exist in a trojan orbit ... Saturn's largest moon, Titan, was discovered in 1655 by Christiaan Huygens using a...
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Space Today Online - Moons of the Solar System  Several moons are larger than the planet Pluto and two moons are larger ... a diameter of 3,280 miles, even larger than either of the planets Mercury and Pluto. ... around Jupiter, Saturn and other giant gas planets in the outer Solar System.
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Saturn's Moon Titan - Universe Today  Feb 18, 2016 ... Saturn's largest moon, known as Titan, is therefore appropriately named. ... the second-largest moon in the Solar System (after Jupiter's moon Ganymede) ... which are closer to Saturn than any of the larger moons, Saturn's moons once ... Like the Moon and many satellites that orbit the other gas giants, its...
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How many moons? :: NASA Space Place  We on Earth have just one moon, but some planets have dozens of them. ... is so close to the sun and its gravity, it wouldn't be able to hold on to its own moon.
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The Galilean Moons of Jupiter  Jupiter's 4 largest moons exhibit some of the most interesting geology in the solar system. They were discovered by Galileo Galilei and are known as the Galilean moons. Jupiter's largest moon, Ganymede, is larger than Mercury while the other three are larger than Pluto.
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Titan (moon) - Wikipedia  Titan (or Saturn VI) is the largest moon of Saturn. It is the only moon known to have a dense ... Like the Moon and many of the satellites of the giant planets, its rotational period ... rotation with Saturn, and permanently shows one face to the planet. ... is a sub-Saturnian point on its surface, from which the planet would always...
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Space Today Online - Moons of the Solar System  Several moons are larger than the planet Pluto and two moons are larger ... Saturn's moon Titan is the second largest in the Solar System with a ... Pandora, Phoebe, Janus, Epimetheus, Helene, Telesto, Calypso, Atlas, Pan, ... When finally uncovered, the moon stood out as a small bright spot in 11 pictures among 30,000...
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The Inner Planets of Our Solar System - Universe Today  Jun 25, 2016 ... Between its eight planets, 176 moons, 5 dwarf planets (possibly hundreds more), ... The terrestrial planets of our Solar System at approximately relative sizes. ... Three of the four inner planets (Venus, Earth and Mars) have ... even has many deep craters and is covered by a thin layer of tiny particle silicates.
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Saturn's moon Titan - Wikipedia  Titan (or Saturn VI) is the largest moon of Saturn. It is the only moon known to have a dense ... It is the second-largest moon in the Solar System, after Jupiter's moon ... Because of this, there is a sub-Saturnian point on its surface, from which the planet ... Before the arrival of Voyager 1 in 1980, Titan was thought to be slightly...
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Moon - Georgia Standards  nearness to Earth, the moon is second only to the sun in apparent size and ... least 57 additional satellites orbit other planets in the solar system, and a .... brought back by Apollo 12 were uniform in composition and about a billion ... why the diameter of the moon is bulged an estimated one third of a mile in the .... miles wide.
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Titan: Facts About Saturn's Largest Moon - Space.com  Jun 30, 2016 ... NASA's Cassini spacecraft snapped the image on Sept. 11, 2011 and it was released on Dec. 22. Titan is Saturn's largest moon and the second largest in the solar system (after Ganymede of Jupiter). It is the only moon in the solar system with clouds and a dense, planet-like atmosphere.
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Pluto's Moons | Five Satellites of Pluto - Space.com  Feb 23, 2016 ... Five moons orbit the dwarf planet Pluto: Charon, Nix, Hydra, Kerberos and Styx. ... "The way I would describe this system is not just chaos, but ... Pluto has one very large moon that is almost half the planet's size. ... in diameter) sometimes leads scientists to refer to Pluto and Charon as a double dwarf planet...
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Moons of Uranus - Wikipedia  Moons of Uranus. Uranus, the seventh planet of the Solar System, has 27 known moons, all of which are named after characters from the works of William Shakespeare and Alexander Pope.
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Your Weight on Jupiter - Bruce McClure's Stargazing Page  Jupiter, the king of the planets, is much larger than our planet Earth. Astronomers tell us it's about 318 times as massive (heavy) as Earth. ... its volume is even more impressive than its mass, the volume being some 1,300 times more than the Earth's. ... The answer would be yes, if Jupiter's size were the same as Earth's.