Thebe was found in "Voyager 1" images by Steve Synnott, a member of the Voyager navigation team. However, before the "Galileo" spacecraft arrived at Jupiter, little was known about it. "Galileo" imaged almost all of the surface of Thebe and put constraints on its composition.
Antagonist
An antagonist is the character in a story who stands in opposition towards the protagonist. As an example, in the Disney movie "The Lion King", the main antagonist is Scar.
While the most common practice is for a hero to be the protagonist and the villain to be the antagonist this is not always the case. As an example in the manga/anime series Death Note protagonist Light Yagami was the villain as it was his goal to rid the world of criminals in order to create his own ideal "utopia" and rule it like a god while antagonist L was the hero as it was his goal to end Light's psychotic killing spree. Another example is Sweeney Todd: The Demon Barber of Fleet Street where the titular protagonist and the antagonist Judge Turpin were both villains.
A story may also have secondary antagonist, either a partner/accomplice of the main antagonist or an entirely separate threat altogether (though a lesser one). Just like the main antagonist they aren't always villains but they are obstacles towards the goal(s) of the protagonist(s).
It is possible for a protagonist to become an antagonist. A well-known example of this is in the "Star Wars" movie series, when Anakin Skywalker turns from a Jedi to a Sith, to become Darth Vader.
Joe Grant
Joe Grant (May 15, 1908 - May 9, 2005) was an American animator, writer and illustrator. He worked for Walt Disney between 1933 and 1949 and again from 1989 until his death just a few days before his 97th birthday.
Joe Grant was born at 1908 in New York City. After school, he began his career as a caricaturist. In 1933, he was hired by Disney for the Mickey Mouse short movie "Mickey's Gala Premiere". In the next years, he, Albert Hurter, Dick Huemer and Fred Moore were the studios' most important character animator. He created the witch in "Snow White and the Seven Dwarfs" (1937). Grant and Huemer created books for "Fantasia" and "Dumbo". Later, he was the head of the "Character Animation Department" at Disney. This department was closed in 1949 and Grant left Disney.
40 years later, in 1989, Grant began working for Disney again. He created characters and sketches for Disney's "Beauty and the Beast", (1991). The movie was the first animated movie which was nominated for the Academy Award for "Best Picture". He was the only person who worked on "Fantasia" (1940) and "Fantasia 2000".
In 2005, his animation short movie "Lorenzo" was nominated for an Academy Award. Just a few weeks later, Joe Grant died while working with his drawing board at the age of 96 in Glendale, California.
Ganymede (moon)
Ganymede is the largest of over 66 moons of the planet Jupiter. It is also the largest moon in the Solar System. Ganymede is larger in diameter than the planet Mercury, but has only about half of its mass. Ganymede is much less dense. Ganymede is part of a group called the Galilean Satellites. These also include Io, Europa and Callisto.
Galileo Galilei discovered this moon in 1610. Simon Marius suggested the name "Ganymede" soon after. In Greek mythology, Ganymede was Zeus' cup-bearer. This name and the names of the other Galilean satellites were not favoured for a long time, and were not put into common use until the mid-20th century. Instead, it is simply referred to by its Roman numeral designation (a system that was introduced by Galileo) as or as the "third satellite of Jupiter". Ganymede is the only Galilean moon of Jupiter named after a male figure.
Ganymede is composed of roughly equal amounts of silicate rock and water ice. Its body has an iron-rich, liquid core, and an internal ocean that may contain more water than all of Earth's oceans together. Its surface has dark regions, with impact craters dated to four billion years ago. This covers about a third of the satellite. Lighter regions, crosscut by grooves and ridges and only slightly less ancient, cover the rest. The cause of the light terrain's disrupted geology is not fully known, but was likely the result of tectonic activity caused by tidal heating.
Callisto (moon)
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Callisto is a moon of the planet Jupiter, discovered in 1610 by Galileo Galilei and named after Kallisto. It is the second largest moon orbiting Jupiter, after Ganymede, and the third largest moon in the Solar System. Callisto is almost the same size as the planet Mercury, being 99% the diameter of the planet, but is much less massive. Of the four Galilean moons of Jupiter, Callisto is the farthest out, with an orbital radius of about 1,880,000 kilometres. It does not form part of the orbital resonance that affects three inner Galilean satellites, Io, Europa and Ganymede. Like the Earth's Moon, Callisto rotates synchronously with its orbital period. This means that one side is always turned toward Jupiter, while the other side never sees the face of the planet. Callisto's surface is less affected by Jupiter's magnetosphere than the seven moons nearer the planet.
Callisto has about equal amounts of rock and ices, with an average density of about 1.83 g/cm³. Chemical compounds on the surface include water ice, carbon dioxide, silicates, and organics. The Galileo spacecraft made investigations of the moon, and revealed that Callisto may have a small silicate core and possibly a subsurface ocean of liquid water more than 100 kilometers deep.
The surface of Callisto is heavily cratered and extremely old. The surface does not show any sign of processes occurring below the surface such as plate tectonics, earthquakes or volcanoes, and is thought to have evolved mainly under the influence of meteorite impacts. Notable surface features include multi-ring structures, impact craters in different shapes, and chains of craters (known as catenae) and associated scarps, ridges and deposits. On a smaller scale, the surface is varied. It is made up of frost on hill tops, surrounded by a smooth blanket of dark material in valleys. This is thought to result from the degradation of small landforms, caused by sublimation. This is supported by the few small impact craters, and the presence of numerous small knobs which are thought to be their remains. The absolute ages of the landforms are not known.
Callisto is surrounded by an extremely thin atmosphere made out of carbon dioxide and probably oxygen molecules. There is also a rather intense ionosphere. An ocean is thought to exist within Callisto. This may mean that life might exist. However, this is less likely than on nearby Europa. Various space probes from Pioneers 10–11 to Galileo and Cassini−Huygens have studied the moon. Callisto is considered the most suitable place for humans to settle for future exploration of the Jovian system.
Notes
Footnotes
Garth Brooks
Troyal Garth Brooks (born February 7, 1962) is an American country music singer and songwriter. He uses rock elements in his recordings and live performances. Brooks was successful in the country singles and country album charts and later also proved popular in the mainstream pop arena, exposing country music to a larger audience.
Brooks has had one of the most successful careers in popular music history, with over 70 hit singles and 15 charted albums to his credit. Throughout the 1990s he broke records for both sales and concert attendance. In 1999, looking to expand his career boundaries, Brooks began a multimedia project involving a fictitious alter ego known as Chris Gaines.
In 2001, Brooks officially retired from recording and performing, after having conflicts between his career and family. During this time he has sold millions of albums through an exclusive distribution deal with Wal-Mart and has released new singles from time to time.