Telescopic View Of Jupiter & Its Galilean Satellites - 4 Moons - Io, Europa, Ganymede, And Callisto

Jupiter with its four Galilean moons,

(from left to right),

Europa, Ganymede, Io, and Callisto.



Telescopic view of Jupiter Planet & its Galilean Satellites.

The Galilean moons Galilean satellites are the four largest moons of Jupiter
& Their names are;
"Io, Europa, Ganymede, and Callisto..."
\
They were first seen by Galileo Galilei in December 1609
or January 1610 and recognized by him as satellites of Jupiter in March 1610.

The Galilean moons were observed in either 1609 or 1610
when Galileo made improvements to his telescope,
which enabled him to observe celestial bodies more distinctly than ever.[
Credit: NASA
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