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Railways PYQCBT 1 2016

RRB NTPC · Question 44

What is the number of Galilian moons of Jupiter discovered by Galileo Gelilei in January 1610? A. 2 B. 3 C. 4 D. 5

  1. C

  2. D

  3. B

  4. A

Show answer & explanation

Answer: (A) C

Explanation

In January 1610 Galileo discovered four large moons of Jupiter: Io, Europa, Ganymede and Callisto, now called the Galilean moons. It was the first evidence of objects orbiting a body other than the Earth.