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  2. Ganymede (moon) - Wikipedia

    en.wikipedia.org/wiki/Ganymede_(moon)

    The Galileo craft made six close flybys of Ganymede from 1995 to 2000 (G1, G2, G7, G8, G28 and G29) [23] and discovered that Ganymede has a permanent (intrinsic) magnetic moment independent of the Jovian magnetic field. [95] The value of the moment is about 1.3 × 10 13 T·m 3, [23] which is three times larger than the magnetic moment of Mercury.

  3. Galilean moons - Wikipedia

    en.wikipedia.org/wiki/Galilean_moons

    The discovery was announced in the Sidereus Nuncius ("Starry Messenger"), published in Venice in March 1610, less than two months after the first observations. On 12 March 1610, Galileo wrote his dedicatory letter to the Duke of Tuscany, and the next day sent a copy to the Grand Duke, hoping to obtain the Grand Duke's support as quickly as ...

  4. Galileo Galilei - Wikipedia

    en.wikipedia.org/wiki/Galileo_Galilei

    Galileo's astronomical discoveries and investigations into the Copernican theory have led to a lasting legacy which includes the categorisation of the four large moons of Jupiter discovered by Galileo (Io, Europa, Ganymede and Callisto) as the Galilean moons.

  5. Timeline of Galileo (spacecraft) - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_Galileo...

    Discovered volcanoes that change from hot to cool in several weeks. After flyby the spacecraft safed due to transient bus reset. Some Io 27 data played back during Ganymede 28. G28 1,000 (600) 20 May 2000 Galileo ' s closest approach to Ganymede coincided with Cassini ' s.

  6. Portal:Solar System/Selected article/24 - Wikipedia

    en.wikipedia.org/wiki/Portal:Solar_System/...

    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.

  7. Space crash: New research suggests huge asteroid shifted ...

    www.aol.com/space-crash-research-suggests-huge...

    The solar system's largest moon, Ganymede, which orbits the largest planet, Jupiter, was hit by an asteroid four billion years ago that shifted the gas giant's satellite on its axis, new research ...

  8. Timeline of discovery of Solar System planets and their moons

    en.wikipedia.org/wiki/Timeline_of_discovery_of...

    Ganymede: Jupiter III Galileo [9] [10] discovered the Galilean moons. These satellites were the first celestial objects that were confirmed to orbit an object other than the Sun or Earth. Galileo saw Io and Europa as a single point of light on 7 January 1610; they were seen as separate bodies the following night. [11] Callisto: Jupiter IV o: 8 ...

  9. Jupiter, ascending: See our solar system’s biggest planet at ...

    www.aol.com/news/jupiter-ascending-see-solar...

    If conditions are clear, anyone with a pair of binoculars or a telescope may even be able to pick out details, such as Jupiter’s four largest moons — Ganymede, Callisto, Io and Europa. The ...