Circumplanetary disk
Videos
A circumplanetary disk is a torus, pancake or ring-shaped accumulation of matter composed of gas, dust, planetesimals, asteroids or collision fragments in orbit around a planet. They are reservoirs of
Circumplanetary disk around exoplanet PDS 70c (point-like source and surrounding cloud in the center of the right image; brightness indicates the hot hydrogen circumplanetary disk), within a circumstellar disk (left image)
Hydrodynamic simulation of the inner part of a circumplanetary disk after exomoons were added to the disk. Simulation by Sun et al.
PDS 70
Natural satellite
Videos
A natural satellite is, in the most common usage, an astronomical body that orbits a planet, dwarf planet, or small Solar System body. Natural satellites are colloquially referred to as moons, by anal
Circumplanetary disk
…matter composed of gas, dust, planetesimals, asteroids or collision fragments in orbit around a planet. They are reservoirs of material out of which moons (or exomoons or subsatellites) may form. Such a disk can manifest itself in various ways. A giant planet will mainly form via core accretion. In this…
Size comparison of Earth and the Moon
Artist impression of Rhea's proposed rings
Jupiter family
243 ida crop