Galilean moon
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Galilean moons — Montage of Jupiter s four Galilean moons, in a composite image comparing their sizes and the size of Jupiter. From top to bottom: Io, Europa, Ganymede, Callisto The Galilean moons are the four moons of Jupiter discovered by Galileo Galilei in… … Wikipedia
Galilean satellite — /gæləˌleɪən ˈsætəlaɪt/ (say galuh.layuhn satuhluyt) noun any of the four largest of Jupiter s 16 satellites (Callisto, Europa, Ganymede and Io). Also, Galilean moon. {named after Galileo who discovered them in 1610} …
Moon — This article is about Earth s Moon. For moons in general, see Natural satellite. For other uses, see Moon (disambiguation) … Wikipedia
Galilean telescope — a refracting telescope that forms an erect image, consisting of an objective of relatively long focal length that causes light rays to converge and an eyepiece of short focal length that causes them to diverge. [1715 25] * * * instrument… … Universalium
Ganymede (moon) — Ganymede Image of Ganymede s anti Jovian hemisphere taken by the Galileo probe. Lighter surfaces, such as in recent impacts, grooved terrain and the whitish north polar cap at upper right, are enriched in water ice. Discovery … Wikipedia
Callisto (moon) — Callisto View of the heavily cratered terrain of Callisto s anti Jovian hemisphere obtained in 2001 by NASA s Galileo spacecraft. The large impact structure Asgard is on the limb at upper right. The prominent rayed crater below and just right of… … Wikipedia
Carpo (moon) — Infobox Planet name = Carpo bgcolour = #ffc0c0 discovery = yes discoverer = Scott S. Sheppard et al. discovered = 2003 mean orbit radius = 17.145 million km period = 458.625 days inclination = 56° to the ecliptic eccentricity = 0.4316cite web… … Wikipedia
Europa (moon) — Europa Europa s trailing hemisphere in approximate natural color. The prominent crater in the lower right is Pwyll and the darker regions are areas where Europa s primarily water ice surface has a higher mineral content. Imaged on September 7,… … Wikipedia
Io (moon) — ] Unlike most satellites in the outer Solar System (which have a thick coating of ice), Io is primarily composed of silicate rock surrounding a molten iron or iron sulfide core. Most of Io s surface is characterized by extensive plains coated… … Wikipedia
Amalthea (moon) — Infobox Planet name = Amalthea caption = Galileo images of Amalthea bgcolour = #a0ffa0 discovery = yes discoverer = E.E. Barnard discovered = September 9, 1892 mean orbit radius = 181 365.84 ± 0.02 km (2.54 RJ)cite… … Wikipedia
