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Ganymede

Ganymede is a moon of Jupiter and the largest moon in the solar system. Astronomers believe that the icy moon houses a saltwater ocean deep under its surface.

185 Questions

How can Titan keep an atmosphere when it is smaller than airless Ganymede?

Titan can maintain its thick atmosphere due to its lower gravity, which allows it to hold onto gas molecules more effectively than Ganymede despite its smaller size. Additionally, the presence of organic compounds in Titan's atmosphere contributes to maintaining its atmospheric pressure.

What is ganymede's orbital period?

Ganymede's orbital period around Jupiter is 7.154 Earth days.

Is it possible for humans to live on Ganymede?

It is currently not possible for humans to live on Ganymede, as it lacks the necessary conditions to support human life. Ganymede is a moon of Jupiter with harsh radiation, extreme cold temperatures, and no atmosphere suitable for breathing.

What probes have been sent to the moon Ganymede?

As of September 2021, the Jovian system moon Ganymede has been probed by the Galileo spacecraft and the Juno spacecraft. The European Space Agency's upcoming JUICE (JUpiter ICy moons Explorer) mission, set to launch in 2022, will also study Ganymede in detail.

What is the weather like in Ganymede?

'Weather' would be a very loose term on the surface, since the atmosphere has a pressure of only 0.1 Pa. There would be temperature changes, but don't expect to see storms, winds, rains or anything of the sort. Meteor showers, maybe?

What stars are near Ganymede?

The Sun. The next star is 4.3 light years away. If you mean "what stars appear to be near Ganymede in the sky", it varies; Jupiter (and therefore Ganymede) moves relative to the stars so you'd need to consult an ephemeris to see what the current position is.

What are the gases in Ganymede's atmosphere?

Ganymede, Jupiter's moon, has a thin atmosphere composed mostly of oxygen and hydrogen. These gases are present in very low concentrations compared to Earth's atmosphere. Ganymede's tenuous atmosphere is believed to be created by charged particles interacting with the moon's surface.

What are Io and Ganymede and Amalthea?

Io and Ganymede are two of Jupiter's moons, with Io being known for its volcanic activity and Ganymede being the largest moon in the solar system. Amalthea is another of Jupiter's moons, known for its irregular shape and reddish color.

Why is Ganymede Jupiter's brightest moon?

Ganymede is Jupiter's brightest moon because it is the largest moon in the solar system, with a diameter larger than that of the planet Mercury. Its surface is covered in icy water and rock, which reflects a high amount of sunlight, making it appear bright when viewed from Earth.

What color is ganymede?

Ganymede, one of Jupiter's moons, appears to have a light gray or slightly brownish color due to its rocky surface, which is covered in craters, grooves, and ridges. The color may also vary in different regions of the moon based on the composition of the surface materials.

Does Ganymede have winds?

Yes, Ganymede, one of Jupiter's moons, does have a thin atmosphere with winds. The winds on Ganymede are mostly generated by convection and tidal forces. However, compared to Earth, these winds are relatively weak due to the moon's low atmospheric density.

How long is Ganymede's year?

Ganymede's year is the same as Jupiter's, since it is a satellite of that planet. However, it orbit's Jupiter every 7 days, 3 hours, and 42 minutes, and 33.2 seconds.

What is the distance from the earth of ganymede?

Ganymede, the largest moon of Jupiter, orbits at an average distance of about 665,000 kilometers (413,000 miles) from Earth. This distance can vary due to the elliptical nature of Ganymede's orbit around Jupiter.

How long does it take Ganymede to orbit Jupiter?

It takes Ganymede approximately 7 days to complete one orbit around Jupiter.

Is Ganymede a satellite?

Yes, Ganymede is a moon or a natural satellite of the planet Jupiter. It is the largest moon in the solar system and is even larger than the planet Mercury.

What does the surface of Ganymede look like?

Ganymede's surface is a mix of two main types of terrain: older, highly cratered regions, and younger, grooved areas. The older regions are covered in impact craters, while the younger areas consist of long, complex grooves believed to be formed by tectonic forces. Additionally, Ganymede has extensive icy plains that show evidence of past geological activity.

What is the definition of Ganymede?

Ganymede is a natural satellite of Jupiter and the largest natural satellite in the Solar System. Completing an orbit in roughly seven days, it is the seventh satellite and third Galilean satellite from Jupiter. Ganymede participates in a 1:2:4 orbital resonance with the satellites Europa and Io, respectively. It is larger in diameter than the planet Mercury but has only about half its mass. Ganymede is composed primarily of silicate rock and water ice. It is a fully differentiated body with an iron-rich, liquid core. A saltwater ocean is believed to exist nearly 200 km below Ganymede's surface, sandwiched between layers of ice. Its surface comprises two main types of terrain. Dark regions, saturated with impact craters and dated to four billion years ago, cover about a third of the satellite. Lighter regions, crosscut by extensive grooves and ridges and only slightly less ancient, cover the remainder. The cause of the light terrain's disrupted geology is not fully known, but was likely the result of tectonic activity brought about by tidal heating. Ganymede is the only satellite in the Solar System known to possess a magnetosphere, likely created through convection within the liquid iron core. The meager magnetosphere is buried within Jupiter's much larger magnetic field and connected to it through open field lines. The satellite has a thin oxygen atmosphere that includes O, O2, and possibly O3 (ozone). Atomic hydrogen is a minor atmospheric constituent. Whether the satellite has an ionosphere to correspond to its atmosphere is unresolved. Ganymede's discovery is credited to Galileo Galilei, who observed it in 1610. The satellite's name was soon suggested by astronomer Simon Marius, for the mythological Ganymede, cupbearer of the Greek gods and Zeus's beloved. Beginning with Pioneer 10, spacecraft have been able to examine Ganymede closely. The Voyager probes refined measurements of its size, while the Galileo craft discovered its underground ocean and magnetic field. A new mission to Jupiter's icy moons, the Europa Jupiter System Mission (EJSM) is proposed for a launch in 2020.

The rotation of Ganymede?

Ganymede, one of Jupiter's moons, rotates on its axis once every 7.15 Earth days. This synchronous rotation means that the same side of Ganymede constantly faces Jupiter. The rotation period was determined based on observations made by spacecraft missions like Voyager and Galileo.

How long does it take ganymede to orbit the sun?

Ganymede takes about 7.2 Earth years to orbit the Sun once.

Is Ganymede bigger than Callisto?

Ganymede is the biggest moon in the solar system.

Is there water on ganymede?

A saltwater ocean is believed to exist nearly 200 km below Ganymede's surface, sandwiched between layers of ice.

Ganymede is the largest of Jupiter's moons it is larger than?

Ganymede is the largest moon in our Solar System, larger than the planet Mercury. It is even larger than the moon Titan, which belongs to Saturn.

What is the distance between Ganymede and Earth?

The distance between Ganymede and Earth varies depending on their positions in their orbits. On average, Ganymede is about 384 million kilometers (238 million miles) away from Earth.

Is there weather on ganymede?

Ganymede, a moon of Jupiter, does not have weather like on Earth. It has a thin atmosphere composed mostly of oxygen, but it is too thin to support weather systems. Ganymede's surface experiences extreme temperature variations between day and night due to its lack of atmosphere.

Ganymede is a moon of which planet?

Ganymede is a moon of Jupiter. It is the largest moon in the solar system and is even larger than the planet Mercury. Ganymede is unique for having its own magnetic field.