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Callisto has a very tenuous atmosphere composed of carbon dioxide [9] and probably oxygen. It was detected by the Galileo Near Infrared Mapping Spectrometer (NIMS) from its absorption feature near the wavelength 4.2 micrometers .
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.
Io (1.9 nbar) and Callisto (26 pbar) have very thin atmospheres, but still enough to have collisions between atmospheric molecules. Other planetary-mass moons only have exospheres at most. [ 26 ] Exospheres have been detected around Earth's Moon, Europa, Ganymede, [ 26 ] Enceladus, [ 27 ] Dione, [ 28 ] and Rhea. [ 29 ]
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
This category has only the following subcategory. I. ... (10 P) Pages in category "Surface features of Callisto (moon)" The following 12 pages are in this category ...
A subsatellite, also known as a submoon or informally a moonmoon, is a "moon of a moon" or a hypothetical natural satellite that orbits the moon of a planet. [ 3 ] It is inferred from the empirical study of natural satellites in the Solar System that subsatellites may be rare, albeit possible, elements of planetary systems .
Heimdall is one of the largest known impact craters on Jupiter's Galilean satellite Callisto, with a diameter of 210 km. It is located near the Callistoan south pole at 63°30′S 3°00′E / 63.5°S 3°E / -63.5; 3 ( Heimdall
What little atmosphere the Moon has consists of some unusual gases, including sodium and potassium, which are not found in the atmospheres of Earth, Mars, or Venus. At sea level on Earth, each cubic centimeter of the atmosphere contains approximately 10 19 molecules; by comparison the lunar atmosphere contains fewer than 10 6 molecules in the ...