What is unique about Callisto?

What is unique about Callisto?

Callisto has an icy surface covered by craters of various shapes and sizes, including bowl-shaped craters and craters with multiple rings. Data gathered by the Galileo spacecraft indicate Callisto may have a subsurface ocean and scientists estimate it may be 155 miles (250 kilometers) below the surface.

Is Callisto the brightest moon?

Callisto is 628,300,000 km from Earth, through a telescope it is brighter in our sky than our own Moon. Callisto is brighter because its surface is made of a thick layer of ice which reflects sunlight more than our Moon. Callisto is bigger than the planet Pluto but only has one third its mass.

Can humans live on Callisto?

As a result, humans could live on the surface of Callisto with just a sufficiently strong radiation attenuating glass between them and the remaining radiation from its host planet. In addition to this relative safety from radiation, this moon is composed of around 40% water.

Is Callisto a dead moon?

Callisto is a large moon orbiting Jupiter. It has an ancient, cratered surface, indicating that geological processes could be dead. However, it may also hold an underground ocean.

What are 5 facts about Callisto?

• Jovian Satellite. Callisto is a moon of Jupiter with a heavily cratered surface of ice and rock.
• It’s Small. …
• Farther From the Sun Than Earth. …
• A Long Day. …
• A Very Thin Atmosphere. …
• Carbon Dioxide on its Surface. …
• No Rings. …
• Popular Destination.

• Jovian Satellite. Callisto is a moon of Jupiter with a heavily cratered surface of ice and rock.
• It’s Small. …
• Farther From the Sun Than Earth. …
• A Long Day. …
• A Very Thin Atmosphere. …
• Carbon Dioxide on its Surface. …
• No Rings. …
• Popular Destination.

Why is Callisto so colorful?

Of Jupiter’s four largest moons, Callisto orbits farthest from the giant planet. Callisto’s surface is uniformly cratered but is not uniform in color or brightness. Scientists believe the brighter areas are mainly ice and the darker areas are highly eroded, ice-poor material.

Is Callisto a female?

The name Callisto is girl’s name meaning “most beautiful”. Best known as one of the moons of Jupiter, Callisto was a nymph coveted by Zeus who was turned into a bear by Hera, becoming the Great Bear (Ursa Major) constellation.

What Callisto called?

Callisto, also called Jupiter IV, outermost of the four large moons (Galilean satellites) discovered around Jupiter by the Italian astronomer Galileo in 1610.

What is the oldest moon?

Discovery
Apoapsis	1897000 km
Semi-major axis	1 882 700 km
Eccentricity	0.0074
Orbital period (sidereal)	16.6890184 d

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Discovery
Apoapsis	1897000 km
Semi-major axis	1 882 700 km
Eccentricity	0.0074
Orbital period (sidereal)	16.6890184 d

What is the safest planet?

Besides Earth, Mars would be the easiest planet to live on. Mars has liquid water, a habitable temperature and a bit of an atmosphere that can help protect humans from cosmic and solar radiation. The gravity of Mars is 38% that of the Earth.

What is a dead moon?

Updated on 02/04/18. Also known as the “dead” moon, this is the time when there is no solar reflection, leaving the lunar face in darkness. The dark lasts about three days before the new crescent appears.

Why is Callisto so old?

Callisto is a satellite covered by a thick crust of ice. The ice has been hit by millions of objects over the years, making craters. There are so many craters on Callisto that you can’t make any new ones without wiping out an older one. All of these craters tell scientists that Callisto’s surface is very old.

Is Callisto dark?

Voyager 1 recorded this view of Callisto in March 1979. Despite being mostly ice, this Jovian moon has a very dark surface.

Can you see Callisto from Earth?

Bottom line: You can see Jupiter’s moons – Io, Europa, Ganymede and Callisto, known as the Galilean satellites – with your own eyes with the help of binoculars or a small telescope.

What is the ultimate fate of Callisto?

Callisto was then killed during the chase by Artemis, who, owing to the machinations of the jealous Hera, mistook Callisto for a real bear.

Does Callisto have light?

Although Callisto is only the second largest of the Galilean satellites, it is still larger than the planets Mercury and Pluto. A far encounter scene from Voyager 1 shows that Callisto superficially resembles Ganymede with areas of light and dark terrain.

How big is Callisto?

Does Callisto mean most beautiful?

Callisto (Kallisto in the Greek) was an Arcadian nymph, whose name literally means “most beautiful.” Her father was the infamous and cruel Lycaon, whom Jupiter changed into a wolf as punishment for his savage and “wolfish” behavior. He is often cited as a mythological precursor of the werewolf.

How is Callisto different from Earth?

Earth is the bigger of the two with a diameter of 12,742km compared to Callisto’s diameter of 4,820.6km. Callisto does not have tectonic plates whilst Earth does which means that many would regard Callisto as a dead planet so to speak. Earth has a magnetosphere whilst Callisto does not.

What features are abundant on Callisto?

Callisto is composed of approximately equal amounts of rock and ices, with a density of about 1.83 g/cm3, the lowest density and surface gravity of Jupiter’s major moons. Compounds detected spectroscopically on the surface include water ice, carbon dioxide, silicates, and organic compounds.

What makes Callisto unique among the planet sized objects in the solar system?

Callisto is unique among the planet-sized objects of the solar system in the apparent absence of interior forces to drive geological change. You might say that this moon was stillborn, and it has remained geologically dead for more than 4 billion years (Figure 1).