Callisto

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Callisto

(kəlĭs`tō), in Greek mythology, an attendant of Artemis. Because she forsook her chastity and bore a son, Arcas, to Zeus, she was transformed into a bear by Artemis. According to another legend she was changed into a bear by the jealous Hera. Arcas, while out hunting, was about to kill her when Zeus intervened and transferred them both to the heavens, Callisto becoming the constellation Ursa Major [great bear] and Arcas becoming Arcturus.

Callisto

(kəlĭs`tō), in astronomy, one of the 39 known moons, or natural satellites, of JupiterJupiter
, in astronomy, 5th planet from the sun and largest planet of the solar system. Astronomical and Physical Characteristics

Jupiter's orbit lies beyond the asteroid belt at a mean distance of 483.6 million mi (778.
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.

Callisto

(kă-liss -toh) The second largest of the four giant Galilean satellites of Jupiter, with a radius of 2400 km and a density of 1.86 g cm–3. It is the faintest of the Galileans, having an albedo of 0.2. It is the most heavily cratered object so far discovered in the Solar System, exhibiting a number of ray systems, i.e. craters from which bright streaks radiate. Some major systems of concentric ring mountains are prominent, particularly in the neighborhood of the huge Valhalla Basin, which is located slightly north of the equator. The basin is a bright circular region 600 km in diameter and is surrounded by concentric rings 50–200 km apart; the outermost ring is 3000 km across. This basin is comparable with Orientale Basin on the Moon, the Caloris Basin on Mercury, and Hellas Planitia on Mars. A second huge basin on Callisto, Asgard Basin, has a total diameter of 1600 km. Prior to the Galileo mission, Callisto was thought to have a thick crust of ice and rock extending to a depth of 200 to 300 km, beneath which there was believed to be a mantle of 1000 km of convecting water or soft ice. But preliminary analysis of the Galileo data has suggested that Callisto's internal structure is relatively undifferentiated, although the proportion of rock to ice may increase toward the center. Callisto, the outermost of the Galilean satellites, is beyond the major charged particle environment of Jupiter. It appears to be geologically inactive, its surface cratering being due to innumerable impacts during the early history of the Solar System. Scientists using the Hubble Space Telescope have detected a tenuous oxygen atmosphere on Callisto, probably caused by the interaction between charged solar particles and water molecules in the satellite's icy crust. See also Jupiter's satellites; Table 2, backmatter.

Callisto

[kə′lis‚tō]
(astronomy)
A satellite of Jupiter orbiting at a mean distance of 1,884,000 kilometers. Also known as Jupiter IV.

Callisto

nymph that Zeus transformed into a bear. [Gk. Myth.: Walsh Classical, 28]
References in periodicals archive ?
Felix Kemp (Giove), Neil Balfour (Mercurio) and Chiara Vinci (Calisto) PICTURE: Matthew Williams-Ellis
This convoluted, mythological drama tells us how Jupiter was besotted by the nymph, Calisto. She rejects his advances, so Mercury suggests the god take on the form of goddess Diana in order to win the virgin girl Meanwhile, the shepherd Endymion and the real Diana fall in love.
Of Io, Europa, Ganymede and Calisto, only Europa is smaller than our own Moon, with the largest Ganymede having a diameter 50 per cent greater than the Moon.
Structuring each of eleven chapters around a key event in Anne's life (from a childhood theatrical performance in Calisto: or, The Chaste Nymph to her funereal rites), Winn skillfully paints the court, its players, and its culture--from thanksgiving services to birthday celebrations--in vivid detail.
IN MERSEY | In the Mersey today, Thea II, a cargo vessel; Schokland, a cargo vessel carrying steel from Turkey; Bright Hero, a bulk carrier carrying scrap metal to Turkey; Aidavita, a cruise vessel sailing to Ireland; Atlantic Sea, a container vessel coming from Belgium and sailing on to the US; Sea Lady, a bulk carrier carrying scrap metal to Egypt; and Calisto, a container vessel coming from Ireland and sailing on to Spain.
La Calisto: Dramma per musica by Giovanni Faustini.
All that stands between Artemisia's vast armada is a few hundred boats under the command of Themistocles, flanked by close friend Aeskylos (Hans Matheson), brave warrior Scyllias (Callan Mulvey) and his son Calisto (Jack O'Connell).
At 168m long and almost four times the capacity of most container ships visiting the port, the Calisto sailed into the record books for the largest container vessel ever operated at the Port of Tyne's container terminal in South Shields.
For the new service, Seago Line will operate the Seago Wybelsum and Seago Calisto, which will be calling alternatively every Saturday at the Port of Tyne in South Shields.