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When Galileo turned his new telescope to Jupiter for the first time, he was puzzled by the fact that there were four other tiny objects clustered around Jupiter. It took several days of observations before Galileo realized that they were moons - going AROUND JUPITER, when Aristotle had said that everything went around the Earth. So, thought Galileo, if some things are going around Jupiter and our Moon is going around the Sun, perhaps Jupiter and the other planets were also going around the Sun.
Jupiter has, at last count, 63 moons, but only four are big enough to be seen in a common backyard telescope; Io, Ganymede, Callisto, and Europa. These were named for the lovers of Jupiter. These are the four that Galileo say, so they are called the "Galilean moons of Jupiter".
Wiki User
∙ 13y ago
Wiki User
∙ 11y agoThey all are about half the size of earth.
Io has frequent massive volcano eruptions because it's core is heated by Jupiter's tidal forces.
Europa, Ganymede, and Callisto are covered in a layer of water ice, with a possible ocean of liquid water underneath, and are therefore very interesting to astrobiologists.
Wiki User
∙ 12y agoGalileo was the first person to see them through a telescope, so, as a group they were named after him.
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Io is a moon of?
Jupiter. It's one of the Galilean satellites, discovered in 1609.
Are there planets with galilean moons?
Only Jupiter, the Galilean moons are the four largest moons of Jupiter which Galileo discovered.The four satellites discovered by Galileo orbit Jupiter.
How big is Europa compared to Jupiter's other major moons?
Europa is the smallest of the Galilean satellites.
Who discovered four satellites orbiting Jupiter?
Jupiter's four largest moons are called (from closest to furthest); Io (pronounced 'eye-oh'), Europa, Ganymede (the largest, and the largest moon in our solar system) and Callisto. These are also known as the Galilean satellites.
What is Kepler's Constant for Jupiter's moons?
The Gravitational Constant on Jupiter is 6.578 * 10^-11.
When was The Galilean Satellites created?
The Galilean Satellites was created in 2020-08.
What are the release dates for The Galilean Satellites - 2003?
The Galilean Satellites - 2003 was released on: USA: 19 October 2003 (New York Film Festival)
Which of the Galilean satellites is larger than Mercury?
Ganymede.
Why are the Galilean satellites important to science?
This is so because the Galilean satellites were the first heavenly bodies to be discovered through his invention, the Telescope.The Galilean moons were also used in one of the earliest attempts to accurately gauge the speed of light.
What are the major satellites in our solar system?
The Earth's Moon, Jupiter's four "Galilean" satellites, Saturn's "Titan", and Neptune's "Triton".
Io is a moon of?
Jupiter. It's one of the Galilean satellites, discovered in 1609.
Is the density of the inner Galilean satellites greater than the outer satellites?
Yes. The density of the Galilean moons decreases with increasing distance from the planet. This decrease in density is likely due to the higher ice-to-rock ratio in the farther moons.
Are there planets with galilean moons?
Only Jupiter, the Galilean moons are the four largest moons of Jupiter which Galileo discovered.The four satellites discovered by Galileo orbit Jupiter.
How big is Europa compared to Jupiter's other major moons?
Europa is the smallest of the Galilean satellites.
Who discovered four satellites orbiting Jupiter?
Jupiter's four largest moons are called (from closest to furthest); Io (pronounced 'eye-oh'), Europa, Ganymede (the largest, and the largest moon in our solar system) and Callisto. These are also known as the Galilean satellites.
What was the first thing discovered with the telescope?
Leaving aside trivial discoveries like "hey, things look bigger through here", probably the first actual discovery was the discovery of the Galilean satellites of Jupiter.
What has the author Tobias C Owen written?
Tobias C. Owen has written: '\\' -- subject(s): Galilean satellites, Galileo probe, Mass spectrometers
