Table of Contents
What do Io Ganymede and Europa have in common?
Io’s Elliptical Orbit 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.
What is the rotation period of Ganymede?
2.4. Ganymede is the ninth-largest extraterritorial object in the Solar System, without a considerable atmosphere. It is orbiting the Red Planet at a rotation period of 172 h, or 7 Earth-day and 4 h. The distance between Earth and Ganymede is 628.3 million kilometers (390.4 million miles).
What is the resonance between Jupiter’s moons Io Europa and Ganymede?
The three inner moons—Io, Europa, and Ganymede—are in a 4:2:1 orbital resonance with each other. The Galilean moons were observed in either 1609 or 1610 when Galileo made improvements to his telescope, which enabled him to observe celestial bodies more distinctly than ever.
What is the rotation period of Io?
Tidal Lock: Over 1.8 Earth days, Io rotates once on its axis and completes one orbit of Jupiter, causing the same side of Io to always face Jupiter.
What are the 4 Galilean moons?
A comparison “portrait” of Jupiter’s four Galilean moons Io, Europa, Gany- mede, and Callisto, each with different characteristics.
Which is older Ganymede or Europa?
Even though Ganymede is also covered with ice and perhaps a subsurface liquid ocean, there are no plate tectonics like in Europa. This moon is farther from Jupiter, and mountains and grooves are signs of tidal flexing of the surface. The impact craters show Ganymede is much older than Europa: around four billion years.
What is the biggest and smallest planet?
It’s a real easy one too. To ensure that the list stays stuck, just think of something along the lines of “Mercury Met Venus Every Night Until Saturn Jumped.” Essentially, this indicates that the size of the planets in order from smallest to largest is Mercury, Mars, Venus, Earth, Neptune, Uranus, Saturn, and Jupiter.
What are the 4 biggest moons of Jupiter?
ESA Science & Technology – Jupiter’s largest moons From top to bottom, the moons are Io, Europa, Ganymede and Callisto. Europa is almost the same size as Earth’s moon, while Ganymede, the largest moon in the Solar System, is larger than planet Mercury.
Why is Io so volcanically active?
The volcanic activity is a result of Io being stretched and squeezed as it orbits Jupiter. Io’s rock surface bulges up and down by as much as 100 meters (328 feet) during the process. This affects Io’s volcanic activity in a similar way to which Earth’s oceans react to the moon.
Does Io Moon have water?
Scientists have found water molecules frozen in the surface ices of Jupiter’s moon Io. “This is the first strong evidence of solid water on the surface of this satellite,” said Dr. The water ice is combined with the more abundant sulfur dioxide ice on Io’s surface.