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Callisto's ionosphere was first detected during Galileo flybys; [21] its high electron density of 7–17 × 10 4 cm −3 cannot be explained by the photoionization of the atmospheric carbon dioxide alone. Hence, it is suspected that the atmosphere of Callisto is actually dominated by molecular oxygen (in amounts 10–100 times greater than CO 2 ...
Callisto is surrounded by an extremely thin atmosphere composed of carbon dioxide [49] and probably molecular oxygen. [50] Investigation revealed that Callisto may possibly have a subsurface ocean of liquid water at depths less than 300 kilometres. [51] The likely presence of an ocean within Callisto indicates that it can or could harbour life.
This is a list of named geological features on Callisto, a moon of Jupiter. This list is complete as of August 2022. This list is complete as of August 2022. Catenae
If conditions are clear, anyone with a pair of binoculars or a telescope may even be able to pick out details, such as Jupiter’s four largest moons — Ganymede, Callisto, Io and Europa. The ...
The NASA astronauts who became the first people to land on the moon's surface in the 1960s and 1970s also discovered a previously unknown lunar characteristic - it has an atmosphere, though quite ...
Two moons in the Solar System, Ganymede and Titan, are larger than the planet Mercury, and a third, Callisto, is just slightly smaller than it, although all three are less massive. Additionally, seven – Ganymede, Titan, Callisto, Io, Earth's Moon, Europa, and Triton – are larger and more massive than the dwarf planets Pluto and Eris.
The atmosphere of Enceladus is also extremely thin and variable, consisting mainly of water vapor, nitrogen, methane, and carbon dioxide vented from the moon's interior through cryovolcanism. The extremely thin carbon dioxide atmosphere of Callisto is thought to be replenished by sublimation from surface deposits.
The wispy outermost layer of Earth's atmosphere extends much deeper into space than scientists realized -- deep enough that the moon orbits through it.Earth's geocorona is a sparse, little ...