Can Ganymede support the atmosphere?

The Galileo spacecraft discovered Ganymede’s magnetic field in 1996, providing evidence to support the theory. NASA’s Hubble Space Telescope has found more evidence for an underground saltwater ocean, and evidence of a thin oxygen atmosphere on Ganymede.

Why does Ganymede have no atmosphere?

Ganymede has no known atmosphere, but recently the Hubble Space Telescope detected ozone at its surface. The amount of ozone is small as compared to Earth. It is produced as charged particles trapped in Jupiter’s magnetic field rain down onto the surface of Ganymede….

How big does a planet have to be to hold an atmosphere?

Small planets and moons have insufficient gravity to hold an atmosphere. The gas molecules escape to space, leaving the planet or moon without an insulating blanket or a protective shield. Earth & Venus are the right size to hold a sufficient-sized atmosphere. Earth’s atmosphere is about 100 miles thick.

Does Io have an atmosphere?

Sulfur dioxide is the primary constituent of a thin atmosphere on Io. It has no water to speak of, unlike the other, colder Galilean moons. Data from the Galileo spacecraft indicates that an iron core may form Io’s center, thus giving Io its own magnetic field.

Why do scientists think Titan has an atmosphere while the large moons of Jupiter Ganymede Callisto Europa and Io do not?

Why do scientists think Titan has an atmosphere while the large moons of Jupiter (Ganymede, Callisto, Europa and Io) do not? Titan got its atmosphere by accreting gases from Saturn. The jovian satellites were competing with one another to do this, so it was unsuccessful for any of them.

What is Ganymede’s atmosphere made of?

oxygen atmosphere
Ganymede has a thin oxygen atmosphere that includes O, O2, and possibly O3 (ozone). Atomic hydrogen is a minor atmospheric constituent. Whether Ganymede has an ionosphere associated with its atmosphere is unresolved. Ganymede’s discovery is credited to Galileo Galilei, the first to observe it, on January 7, 1610.

What is needed to create an atmosphere?

Three factors play into a gas’s ability to escape the pull of a planet’s gravity: temperature, molecular mass, and escape velocity, the speed a molecule needs to achieve to escape into space.

What is the atmosphere like on Io?

How long does it take Io to orbit Jupiter?

42 hours
Io/Orbital period