also: ガリレイえいせい
noun
Galilean moons; Galilean satellites
Refers to the four largest moons of Jupiter discovered by Galileo: Io, Europa, Ganymede, and Callisto. Used in astronomical contexts.
See also: イオ · エウロパ · ガニメデ · カリスト
ガリレオ衛星は、木星の周りを回る四つの大きな衛星です。
The Galilean moons are four large satellites that orbit Jupiter.
ガリレイ衛星の中で、イオは火山活動が活発です。
Among the Galilean satellites, Io has active volcanism.
The outermost Galilean moon, heavily cratered.
Standard modern spelling using ガリレオ (Galileo).
Alternate spelling using ガリレイ (Galilei). Less common but still encountered.
From the name Galileo (ガリレオ/ガリレイ) + 衛星 (satellite). Named after Galileo Galilei, who discovered these moons in 1610.