[DOC] [TLE] moons of Jupiter - Wikipedia [PAR] The Galilean moons are the four largest moons of JupiterIo, Europa, 
Ganymede, and Callisto. ... Galileo initially named his discovery the Cosmica 
Sidera ("Cosimo's stars"), but the names that ... On March 19, he sent the 
telescope he had used to first view Jupiter's moons to the Grand Duke, ... See 
also: History of longitude. [DOC] [TLE] Exploration of Io - Wikipedia [PAR] The exploration of Io, Jupiter's third-largest moon, began with its discovery in 
1610 and continues today with Earth-based observations and visits by spacecraft 
to the Jupiter system. Italian astronomer Galileo Galilei was the first to record an 
observation of Io ... In the 1960s the moon's effect on Jupiter's magnetic field was 
discovered. [DOC] [TLE] Moons of Jupiter - Wikipedia [PAR] There are 67 known moons of Jupiter. This gives Jupiter the largest number of 
moons with ... The remainder of Jupiter's moons are irregular satellites whose 
prograde ... space probes reached Jupiter around 1979, 13 moons had been 
discovered, ... convention, a name first used by French astronomer Camille 
Flammarion. [DOC] [TLE] Jupiter's Moons: Facts About the Largest Jovian Moons - Space.com [PAR] Jul 5, 2012 ... With a total of 67 known moons  including four large moons ... Horizons 
spacecraft during its flyby of Jupiter in late February 2007. ... The moons, later 
named Io, Europa, Callisto and Ganymede, were the first discovered beyond 
Earth. ... Italian astronomer Galileo Galilei discovered four of Jupiter's moons... [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 ... The Galileans 
take their name from Galileo Galilee, the famous Italian astronomer who 
discovered them ... to have found these four moons  prescribed the names Io, 
Europa, ... during the tenth orbit of Jupiter by NASA's Galileo spacecraft. [DOC] [TLE] Jupiter - Moons | Planets - NASA Solar System Exploration [PAR] #jupiterProvMoonCountCap# more have been discovered but not given ... The 
planet Jupiter's four largest moons are called the Galilean satellites after ... The 
German astronomer Simon Marius claimed to have seen the moons ... These 
large moons, named Io, Europa, Ganymede, and Callisto, are each distinctive 
worlds. [DOC] [TLE] What Is Jupiter? | NASA [PAR] Jupiter's average distance from the sun is 5.2 astronomical units, or AU. ... The 
planet is named after Jupiter, the king of the Roman gods in mythology. What Is 
Jupiter Like ... Italian astronomer Galileo Galilei discovered these moons in 1610. 
... NASA's Juno spacecraft launched in 2011 and arrived at Jupiter on July 4, 
2016. [DOC] [TLE] Galilean Moons of Jupiter - JPL - NASA [PAR] The planet Jupiter's four largest moons, or satellites, are called the Galilean 
moons, after Italian astronomer Galileo Galilei, who observed them in 1610. ... 
The names ... 1995 to 2003, the Galileo spacecraft made observations from 
repeated ... 1610  Galileo Galilei and Simon Marius independently discover 
four moons... [DOC] [TLE] Ten Things You Need to Know About the Juno Mission [PAR] Jul 5, 2016 ... NASA's solar-powered Juno spacecraft arrived at Jupiter on July 4, ... These are 
the Galilean moons, observed in 1610 by the famed Italian astronomer in a 
discovery that ... Juno is named after a Roman goddess who could see through ... 
Galileo's notes recording the discovery of Jupiter's four large moons. [DOC] [TLE] Lego figures flying on Nasa's Juno probe hurtle towards planet at ... [PAR] Jul 4, 2016 ... Nasa's Juno spacecraft is set to fire its main rocket engine early ... the 17th 
century Italian astronomer Galileo Galilei, the Roman god Jupiter, ... and 
discovered the four largest satellites of Jupiter - named the Galilean moons in his 
honour. ... Named after the Roman god Jupiter's cloud-piercing wife, Juno is... [DOC] [TLE] Journey to Jupiter: NASA spacecraft nears planet rendezvous [PAR] Jun 30, 2016 ... During the mission, Juno will peer through Jupiter's

Question: A spacecraft sent to explore Jupiter is named for this Italian astronomer who discovered 4 of Jupiter's moons
Answer: Galileo