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  2. Exploration of Io - Wikipedia

    en.wikipedia.org/wiki/Exploration_of_Io

    In his book Mundus Iovialis ("The World of Jupiter"), published in 1614, Simon Marius, the court astronomer to the Margraves of Brandenburg-Ansbach, claimed to have discovered Io and the other moons of Jupiter in 1609, one week before Galileo's discovery. [7] According to Marius, he began observing the Jupiter system in late November 1609. [13]

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

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

    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 January 1610

  4. Timeline of Galileo (spacecraft) - Wikipedia

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

    The trip from Earth to Jupiter, the probe's exploration of the Jovian atmosphere, and an orbiter tour consisting of 11 orbits of Jupiter constituted Galileo ' s primary mission. On Jupiter Arrival Day (7 December 1995), the Galileo spacecraft was given a gravity-assist from Io and then subjected to the Jupiter orbit insertion (JOI) maneuver ...

  5. New observations of the most volcanic world in our solar ...

    www.aol.com/news/observations-most-volcanic...

    Next, Juno will swing by 2,175 miles (3,500 kilometers) above Jupiter’s center on December 27, logging 645.7 million miles (1.04 billion kilometers) since beginning its investigation of Jupiter ...

  6. Rømer's determination of the speed of light - Wikipedia

    en.wikipedia.org/wiki/Rømer's_determination_of...

    Jupiter was in opposition on 2 March 1672: the first observations of emergences were on 7 March (at 07:58:25) and 14 March (at 09:52:30). Between the two observations, Io had completed four orbits of Jupiter, giving an orbital period of 42 hours 28 minutes 31¼ seconds. The last emergence observed in the series was on 29 April (at 10:30:06).

  7. Galileo (spacecraft) - Wikipedia

    en.wikipedia.org/wiki/Galileo_(spacecraft)

    He solicited suggestions for a more inspirational name for the project, and the most votes went to "Galileo" after Galileo Galilei, the first person to view Jupiter through a telescope. His 1610 discovery of what is now known as the Galilean moons orbiting Jupiter was important evidence of the Copernican model of the solar system.

  8. Copernican Revolution - Wikipedia

    en.wikipedia.org/wiki/Copernican_Revolution

    Galileo's next astronomical discovery would prove to be a surprising one. While observing Jupiter over the course of several days, he noticed four stars close to Jupiter whose positions were changing in a way that would be impossible if they were fixed stars.

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

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

    NASA's Juno spacecraft captured this view of Jupiter during the mission's 54th close flyby of the giant planet Sept. 7, 2023.