Io (moon)
Io
True color image taken by the Galileo probe
Click image for description Discovery Discovered by
Galileo Galilei Discovered on
January 7, 1610 Orbital characteristics Mean radius
421,700 km (0.002819 AU) Eccentricity
0.
Io
Jupiter I
Io ( "EYE oh" ) is the fifth of Jupiter's known satellites and the third largest; it is the innermost of the Galilean moons. Io is slightly larger than Earth's Moon. orbit: 422,000 km from Jupiter diameter: 3630 km mass: 8.
Io
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Io
Related Category: Astronomy: General
(´), in astronomy, one of the 39 known moons, or natural satellites, of Jupiter; magnetic-field data collected by the space probe Galileo in 2002 strongly indicates a liquid-water ocean— ...
Io's "Water Cycle"
A feature of great interest is illustrated by the flat-topped mesa in this image. The mesa surrounds a giant calder of the Tvashtar Catena crater chain.
Voyager 2, passing Io on July 9, 1997, was steered to cross those field lines, and detected the magnetic disturbance of its currents, which also seem to be the cause of the modulated radio emission.
Io
Jupiter's moon Io is very far from the Sun. The temperatures on Io are cold except for the places near the volcanoes. At the volcanoes, the surface temperature can be as hot as 1704 degrees Celsius! ...
Io has a diameter of 3660 km and takes 42.5 hours to complete each orbit around Jupiter. Just like the Earth's moon, it always turns the same side towards the planet.
As Io moves around its orbit in the strong magnetic field of Jupiter and through this plasma torus, a huge electrical current is set up between Io and Jupiter in a cylinder of highly concentrated magnetic flux called the Io Flux Tube.
South Pole of Io
Numerous volcanic features dot the south polar region of , including lava flows around . Scientists think that the bright patches seen here may be due to sulfur dioxide ice and gas jetted from fractures in the surface.
Io
The Galilean moon closest to Jupiter is Io. Io has no impact craters even though it has a rocky, solid surface. The surface must be very young because something has erased the impact craters.
Io
Io looks like a giant pizza. One of the prettiest -- and strangest -- bodies in the solar system, Io is sure to be on magazine covers when the pictures arrive from Galileo.
Io Cutaway
Many astronomers think that the formation of Jupiter and the Galilean satellites may in fact have mimicked on a small scale the formation of the Sun and the inner planets.
Io: Fire World
Robotic probes may someday provide close-up views of some of the most remarkable vistas in the solar system, from the canyons of Mars to the ice-geysers of Triton.
Io lies within a dangerous part of Jupiter's magnetic field. The radiation found in this area is a thousand times stronger than what is needed to kill a Human.
Io Â- Europa Â- Ganymede Â- Callisto
Themisto
Himalia group ...
Io Flux Tube
A tube of magnetic lines and electric currents connecting Io and Jupiter.
Ion ...
Mighty Io is the only object in the solar system, other than the Earth, known to have an active volcano system. The volcanos on Io spew glow in the dark gas which forms a gaseous ring around the king of the planets.
IO
Io is a large, rocky, volcanically active moon of Jupiter. Its volcanoes spew out molten sulfur, making Io a very colorful moon. It is the innermost of Jupiter's four large moons and the third largest.
Io
One of the . Io is covered by at least 10 active sulfur-spewing volcanos, as well as flows, vent craters, and fissures.
Io, closer yet, is commonly compared to a pizza. Its volcanoes make it the most active world in the solar system. They spew out the sulfuric acid that gives Io its many colors.
Io, Europa, Ganymede, Callisto, Amalthea, Himalia, Elara, Pasiphae, Sinope, Lysithea, Carme, Ananke, Leda, Metis, Adrastea, Thebe, Callirrhoe, Themisto, Kalyke, Iocaste, Erinome, Harpalyke, Isonoe, Praxidike, Megaclite, Taygete, Chaldene, Autonoe, ...
Io has many active volcanoes. The volcanoes produce gases containing sulfur. The yellow-orange surface of Io is most likely made of sulfur from the volcanic eruptions. Europa is the smallest of the Galilean satellites.
Io: Jupiter's Galilean moon. Highly volcanic.
ISS: International Space Station, a joint project between NASA, ESA and the Russian Space Agency.
J ...
Io looks very different in appearance from any other object in the solar system. Nothing comes anywhere close to looking like this thing. When the Voyager images from this object were first seen, someone mentioned that it looked like a pizza.
Io (moon)
'Io' is the innermost of the four Galilean moons natural satellite of Jupiter and, with a diameter of 3,642 Kilometre, the List of moons by diameter in the Solar System....
's volcanism, Europa
Europa (moon) ...
= ( ln Io - ln I )/( ln Io - ln Im,w )
turbine (NASA SP-7, 1965) 1. A machine consisting principally of one or more turbine wheels and a stator.
2. A turbine wheel.
3. A turbine engine.
Volcano on Io with molten red sulfur, surrounded by
black lava rock and yellowish sulfur-rich terrain (more).
The orbits of Io, Europa, and Ganymede, the largest moon in the solar system, form a pattern known as a Laplace resonance; for every four orbits that Io makes around Jupiter, Europa makes exactly two orbits and Ganymede makes exactly one.
Jupiter's moon Io is the most volcanically active object in the solar system because of tidal interaction with Jupiter.
The trouble was, Io was one of Hera's priestesses, and Hera soon discovered the infidelity. To protect Io, Zeus transformed her into a heifer.
Amalthea is the largest of Jupiter's non-Galilean satellites and one of four moons that circle around Jupiter inside the orbit of Io. Amalthea is potato-shaped like the Martian moon Phobos but 10 times bigger.
Volcanic calderas, instead of impact craters, dot the surface of Io, and nine volcanoes were observed in eruption when the two Voyager spacecraft flew by in 1979.
In Greek mythology, Cepheus was descended from the nymph Io, one of Zeus' favourites, which made him worthy of a place among the stars. His kingdom, Ethiopia, was not in Africa, but between the south-eastern Mediterranean shore and the Red Sea.
Io (pictured here) is the closest of these to Jupiter. Io is the most volcanically active body in the solar system, due to heat resulting from tidal forces (discussed further in Chapter 3) which flex its crust.
The science goals will range from spectroscopy, the surface mapping of Solar System bodies like Jupiter's ever changing and volcanic moon Io, and directly photographing planets around other stars.
In 1610 Galileo discovered Jupiter's four largest satellites (moons): Io, Europa, Ganymede, and Callisto.
A small telescope easily picks out Jupiter's four major moons: Io, Europa, Gabymede and Callisto. All four orbit with the same hemisphere facing Jupiter -- just like our Moon orbits with the same side facing our planet Earth.
Romer did this by observing eclipses of Jupiter's moon Io as Jupiter's distance from Earth varied through the year.
In a specific sense, the Moon is the only natural satellite of Earth and the fifth largest such object in the Solar System (after Io, Callisto, Titan and Ganymede). It is the brightest object in the Earth's sky after the Sun.
Of these four moons, Ganymede is the largest in the Solar System, Callisto is the third-largest in the Solar System, and Io is the fourth-largest.
This magnetic field traps high energy particles --- the particles come from the Sun, from outside the Solar system, and from the volcanoes on Io, one of Jupiter's many moons. The trapped particles then creates the .
Jupiter and its ring system as seen from the surface of the moon Io. The ring grows in brightness as Io goes around to the dark side of Jupiter because the ring's dust scatters light very efficiently at high phase angles.
Pele, the largest of the volcanoes seen on Jupiter's moon Io, is throwing sulfur and sulfur-dioxide products to heights 30 times that of Mount Everest, and the fallout zone covers an area the size of France. The eruption of Mount St.
An alternative story says that Taurus may represent Io, another illicit love of Zeus, whom the god turned into a heifer to disguise her from his wife Hera. But Hera was suspicious and set the hundred-eyed watchman Argus to guard the heifer.
The same phenomenon appears at Jan Mayen especially in November, December and January, and it is the normal state of matters in temperate latitudes, where the frequency is usually greatest between 8 and io P.M.
Jupiter has a large number of satellites, including the four Galilean satellites, Io, Europa, Ganymede and Callisto. Io is famous for its active volcanic activity, which emits sulphuric compounds, and has a geologically young surface.
Volcanoes have been at work on all terrestrial planets (the rocky planets: Earth, Mercury, Venus, and Mars), the Moon, and some satellites of the outer gaseous planets (for example, Jupiter's moon Io).
At Jupiter, Io's tidal flexing drives volcanoes which feed deadly radiation into Jupiter's magnetosphere while a similar effect on nearby Europa may keep an ocean from freezing, ...
GALILEAN MOONS - Four largest of Jupiter's moons: Io, Europa, Ganymede and Callisto. Dscovered independently by Galileo and Marius, Galileo proposed that they be named the “Medicean stars,' in honor of his patron Cosimo II de Medici.
first discovered the four largest moons of Jupiter, Io (which is volcanically active), Europa, Ganymede (the largest of Jupiter's moons, pictured at the left), and Callisto in 1610; these moons are known as the Galilean moons.
The four largest satellites of Jupiter - Io (J I), Europa (J II), Ganymede (J III), and Callisto (J IV) - discovered by Galileo in 1610. All are locked in synchronous rotation with Jupiter. [H76]
Galilean Telescope ...
Not only is it one of the largest moons in the solar system, but it is the only satellite with a real atmosphere (not counting the constant haze of volcanic output that surrounds Io).
I like to watch swirling inside the Great Red Spot, seeing Io as a little lemon-yellow disk in front of Jupiter's beige bands, endless spots, ovals and swirls in Jupiter, fleeting detail on Ganymede, and the rings of Saturn.
They were subsequently named after mythological paramours of Jupiter (or Zeus in the Greek pantheon): Io, Europa, Ganymede, and Callisto. This tradition has been followed in the naming of the other moons.
Twenty eight satellites orbit Jupiter. The four largest moons are Io, Europa, Ganymede and Callisto. They were observed as long ago as 1610.
Jupiter probably has a core of rocky material, surrounded by gases and liquid.
Io is bigger than our moon and Ganymede and Callisto are both bigger than the planet Mercury. Astronomers are particularly interested in Europa because underneath it's icy surface there appears to be evidence of a warmer salty ocean.
Galilean satellites The four brightest satellites of Jupiter; Io, Europa, Ganymede, and Callisto, named after their discoverer, Galileo Galilei (also known as the Jovian satellites).
Himalia is the only moon other than Europa, Ganymeade, Callisto and IO visible with small telescopes. You will find the help you need to locate it in this article.
Galilean Moons The four Jovian moons first observed by Galileo ( Io, Europa, Ganymede and Callisto). They are observable with small amateur telescopes.
Geocentric Earth-centred.
 See also: Earth, Jupiter, Planet, Solar, Moon
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