How many moons of Jupiter did Galileo see?

Answer Astronomer Galileo Galilei discovered four of Jupiter’s moons. Galileo originally observed three moons, but spotted a fourth one about a week later. As of 2009, Jupiter had 49 moons and 14 more u... Read More »

Top Q&A For: How many moons of Jupiter did Galileo see

How many moons do Jupiter have to be exact?

Jupiter has 63 moons discovered to date. Some names of Jupiter's moon are Io, Europa, Ganymede, Callisto and many more.

Which two moons of Jupiter might have an ocean of liquid water beneath their frozen surfaces?

As of 2011, scientists believe that three, not two, of Jupiter's moons may have saltwater oceans beneath their thick ice crusts: Europa, Callisto and Ganymede. Changes in each moon's magnetic field... Read More »

What are the names of the moons of Neptune?

The first moon of Neptune, Triton, was discovered in 1846 and the second, Nereid, in 1949, according to Case Western Reserve University. Thalassa, Despina, Galatea, Larissa, Proteus and Naiad were ... Read More »

What are the names of the eight moons revolving around Neptune?

According to the Nine Planets website, there are 13 known moons orbiting Neptune. They are named Naiad, Thalassa, Despina, Galatea, Larissa, Proteus, Triton, Nereid, Halimede, Sao, Laomedeia, Psama... Read More »