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During the G1 flyby in 1996, Galileo instruments detected Ganymede's magnetic field. [116] Data from the Galileo flybys was used to discover the sub-surface ocean, which was announced in 2001. [23] [40] High spatial resolution spectra of Ganymede taken by Galileo were used to identify several non-ice compounds on the surface. [52]
The Galilean moons are named after Galileo Galilei, who observed them in either December 1609 or January 1610, and recognized them as satellites of Jupiter in March 1610; [2] they remained the only known moons of Jupiter until the discovery of the fifth largest moon of Jupiter Amalthea in 1892. [3]
The internal structure of Ganymede. Galileo returned to Ganymede on orbits G7 and G9 in April and May 1997, and on G28 and G29 in May and December 2000 on the GMM. [217] Images of the surface revealed two types of terrain: highly cratered dark regions and grooved terrain sulcus. Images of the Arbela Sulcus taken on G28 made Ganymede look more ...
Geologic Map of Ganymede (February 11, 2014). This is a list of named geological features, except craters, on Ganymede , a moon of Jupiter . The list is complete as of August 2022.
Galileo Regio is a large, dark surface feature on Jupiter's moon Ganymede. [1] It is a region of ancient dark material that has been broken apart by tectonism and is now surrounded by younger, brighter material (such as that of Uruk Sulcus) that has been upwelling from Ganymede's interior. It is thought to be some 4 billion years old and is ...
The observatory is located off State Route 76 in northern San Diego County, California, two hours' drive from downtown San Diego and three hours' drive from central Los Angeles (UCLA, LAX airport). [38] Those staying at the nearby Palomar Campground can visit Palomar Observatory by hiking 2.2 miles (3.5 km) up Observatory Trail. [39]
Warner Bros. Discovery has revealed its lineup for this year’s San Diego Comic-Con which runs July 21-24. On the schedule is a panel for the HBO original series House of the Dragon, the prequel ...
Ganymede is the only satellite in the Solar System known to possess a magnetosphere, likely created through convection within the liquid iron core. The satellite has a thin oxygen atmosphere that includes O, O 2, and possibly O 3. Ganymede's discovery is credited to Galileo Galilei, who observed it in 1610.