GK
SOLAR SYSTEM
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
uranus
|
|
|
venus
|
|
|
jupiter
|
|
|
None of the above
|
Detailed explanation-1: -Jupiter’s four largest moons were the first moons discovered beyond Earth. They are called the Galilean satellites after Italian astronomer Galileo Galilei, who first observed them in 1610.
Detailed explanation-2: -Ganymede, Europa and Io are all in orbital resonance with Jupiter. Io completes exactly four orbits and Europa completes exactly two orbits in the same time it takes Ganymede to complete one orbit around Jupiter. During the course of their orbits, the three moons line up like in the picture seen to the left.
Detailed explanation-3: -The Galilean moons (/ˌɡælɪˈliː.ən/), or Galilean satellites, are the four largest moons of Jupiter: 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.