[DOC] [TLE] moons of Jupiter - Wikipedia [PAR] From top to bottom: Io, Europa, Ganymede, Callisto. The Galilean moons are the four largest moons of JupiterIo, Europa, Ganymede, and Callisto. They were discovered by Galileo Galilei around January 1610 and were the first group of objects found to orbit another planet. Their names derive from the lovers of Zeus. [DOC] [TLE] Moons of Jupiter - Wikipedia [PAR] The first claimed observation of one of Jupiter's moons is that of Chinese ... By 
January 1610, he had sighted the four massive Galilean moons with ... Simon 
Marius had independently discovered them one day ... and the names Marius 
assigned are used today: Ganymede, Callisto, Io, and Europa. [DOC] [TLE] Jupiter - Moons | Planets - NASA Solar System Exploration [PAR] Fourteen more have been discovered but not given official status or names. ... 
The planet Jupiter's four largest moons are called the Galilean satellites after 
Italian astronomer Galileo Galilei, who first observed them in 1610. ... German 
astronomer Simon Marius claimed to have seen the moons around the same time
, but he... [DOC] [TLE] Galilean Moons of Jupiter - JPL - NASA [PAR] The planet Jupiter's four largest moons, or satellites, are called ... observed them 
in 1610. ... The names ... Like Europa, Ganymede and Callisto have oceans, but 
they are ... 1610  Galileo Galilei and Simon Marius independently discover. [DOC] [TLE] The Galilean Moons of Jupiter - Futurism [PAR] Mar 3, 2013 ... Io, Callisto, Europa, and Ganymede are the four Galilean moons (pictured here in 
that order). ... When Galileo originally discovered the moons in 1610, he called 
them the ... the name of Simon Marius suggested the names of Zeus' lovers (the 
... The moons themselves are some of the largest in objects in the... [DOC] [TLE] Simon Marius and his Astronomical Discoveries - yovisto ... [PAR] Jan 20, 2015 ... He studied and named the four largest moons of Jupiter that he claimed to ... 
Marius discovered the moons independently, but at least some days later than 
Galileo. Regardless of priority, the mythological names by which these satellites 
... of revolution and other orbital elements for them than did Galileo. [DOC] [TLE] What are the Galilean Moons? - Universe Today [PAR] Apr 26, 2016 ... Jupiter's largest moons are known as the Galileans, all of which were ... By 
January 13th, he had discovered a fourth moon, and named them the Medicean 
stars, ... However, Simon Marius  a German astronomer who also claimed to 
have found these four moons  prescribed the names Io, Europa,... [DOC] [TLE] Europa  Facts And Information About Jupiter Moon Europa [PAR] Jun 13, 2016 ... Europa is an icy moon of Jupiter and one of the four so-called ... The surface of 
Europa is frozen, covered with a layer of ice, but ... It is possible that German 
astronomer Simon Marius (1573-1624) also discovered the moon at the same ... 
officially given the so-called Galilean names we know them by today. [DOC] [TLE] The Discovery of the Galilean Satellites - Views of the Solar System [PAR] Galileo first observed the moons of Jupiter on January 7, 1610 through a 
homemade telescope. He ... Galileo continued to observe the stars and Jupiter 
for the next week. ... Finally, Galileo determined that what he was observing were 
not stars, but ... Simon Marius claimed to have observed Jupiter's moon as early 
as late... [DOC] [TLE] Simon Marius | German astronomer | Britannica.com [PAR] German astronomer who named the four largest moons of Jupiter: Io, Europa, 
Ganymede, and Callisto. All four are ... He and Italian astronomer Galileo Galilei 
both claimed to have discovered them, about 1610, and it is likely both did so 
independently. ... He was best known by the Latin version of his name, Simon 
Marius. [DOC] [TLE] The moons of Jupiter - Phys.org [PAR] Sep 15, 2015 ... In addition to being the largest planet in our Solar System  with two and a half 
times the ... In 1610, he made the first recorded discovery of moons

Question: He discovered the 4 largest moons of Jupiter, but Simon Marius gave them names
Answer: Galileo