Post by shadowdragon on Jul 9, 2015 2:45:27 GMT
Saturn is the sixth planet from the Sun and the second largest in the Solar System, after Jupiter. It is a gas giant with an average radius about nine times that of Earth. Although only one-eighth the average density of Earth, with its larger volume Saturn is just over 95 times more massive. Saturn is named after the Roman god of agriculture, its astronomical symbol (♄) represents the god's sickle.
Saturn's interior is probably composed of a core of iron–nickel and rock (silicon and oxygen compounds). This core is surrounded by a deep layer of metallic hydrogen, an intermediate layer of liquid hydrogen and liquid helium, and finally outside the Frenkel line a gaseous outer layer. Saturn has a pale yellow hue due to ammonia crystals in its upper atmosphere. Electrical current within the metallic hydrogen layer is thought to give rise to Saturn's planetary magnetic field, which is weaker than Earth's, but has a magnetic moment 580 times that of Earth due to Saturn's larger size. Saturn's magnetic field strength is around one-twentieth the strength of Jupiter's. The outer atmosphere is generally bland and lacking in contrast, although long-lived features can appear. Wind speeds on Saturn can reach 1,800 km/h (500 m/s), faster than on Jupiter, but not as fast as those on Neptune.
Saturn has a prominent ring system that consists of nine continuous main rings and three discontinuous arcs and that is composed mostly of ice particles with a smaller amount of rocky debris and dust. Sixty-two moons are known to orbit Saturn, of which fifty-three are officially named. This does not include the hundreds of moonlets comprising the rings. Titan, Saturn's largest and the Solar System's second largest moon, is larger than the planet Mercury and is the only moon in the Solar System to have a substantial atmosphere.
I give you Saturn and 12 of it's moons.
This overlay set contains
Saturn
Medium Resolution cloud overlay
Prometheus
Tiny Resolution Shaded Relief
Low Resolution Topography
Epimetheus
High Resolution Voyager image overlay
Low Resolution Topography
Janus
Low Resolution Cassini
Tiny Resolution Voyager Shaded Relief
Low Resolution Voyager Topography
Low Resolution Voyager Image
Mimas
Super Resolution Cassini
Low Resolution Voyager airbrush
Enceladus
Mega Resolution Cassini B/W (2016)
Mega Resolution Cassini Color (2014)
Low resolution Voyager airbrush
High resolution water ice grain size
Low resolution crater distribution
Low resolution geology
Tiny resolution topography
Tiny resolution "snowfall"
Tethys
Mega Resolution Cassini
Low Resolution Voyager airbrush
Dione
Mega Resolution Cassini
Medium Resolution Voyager airbrush
High resolution water ice abundance
Tiny resolution topography
Rhea
Mega Resolution Cassini
Low Resolution Voyager airbrush
High resolution water ice abundance
Titan
Mega resolution RADAR SAR + Hyper Resolution Huygens landing site.
High resolution ISS mosaic
Super Resolution VIMS Infrared
Medium resolution:
Dune direction
Geology
Cloud Coverage
Low resolution:
Hubble
Emissivity
Tiny Resolution
Observed Scattering
Simulated scattering
Atmosphere (turn on Sun and Atmosphere to view actual color with haze and shading effect as seen in image below)
Hyperion
Medium Resolution Cassini
Low resolution Voyager Shaded relief
Medium resolution Voyager mosaic
Low Resolution Voyager Topography
Iapetus
Super Resolution Cassini
High Resolution Voyager airbrush
Phoebe
Medium Resolution Cassini
Placenames for all but Prometheus and Saturn (which have none)
Over 500 images from NASA's planetary Photojournal
Next up, Uranus and Neptune, which shouldn't take long since they weren't explored much like Jupiter and Saturn.
Saturn's interior is probably composed of a core of iron–nickel and rock (silicon and oxygen compounds). This core is surrounded by a deep layer of metallic hydrogen, an intermediate layer of liquid hydrogen and liquid helium, and finally outside the Frenkel line a gaseous outer layer. Saturn has a pale yellow hue due to ammonia crystals in its upper atmosphere. Electrical current within the metallic hydrogen layer is thought to give rise to Saturn's planetary magnetic field, which is weaker than Earth's, but has a magnetic moment 580 times that of Earth due to Saturn's larger size. Saturn's magnetic field strength is around one-twentieth the strength of Jupiter's. The outer atmosphere is generally bland and lacking in contrast, although long-lived features can appear. Wind speeds on Saturn can reach 1,800 km/h (500 m/s), faster than on Jupiter, but not as fast as those on Neptune.
Saturn has a prominent ring system that consists of nine continuous main rings and three discontinuous arcs and that is composed mostly of ice particles with a smaller amount of rocky debris and dust. Sixty-two moons are known to orbit Saturn, of which fifty-three are officially named. This does not include the hundreds of moonlets comprising the rings. Titan, Saturn's largest and the Solar System's second largest moon, is larger than the planet Mercury and is the only moon in the Solar System to have a substantial atmosphere.
I give you Saturn and 12 of it's moons.
Saturn Megaoverlay.kmz (298.88 KB)
Saturn
Medium Resolution cloud overlay
Prometheus
Tiny Resolution Shaded Relief
Low Resolution Topography
Epimetheus
High Resolution Voyager image overlay
Low Resolution Topography
Janus
Low Resolution Cassini
Tiny Resolution Voyager Shaded Relief
Low Resolution Voyager Topography
Low Resolution Voyager Image
Mimas
Super Resolution Cassini
Low Resolution Voyager airbrush
Enceladus
Mega Resolution Cassini B/W (2016)
Mega Resolution Cassini Color (2014)
Low resolution Voyager airbrush
High resolution water ice grain size
Low resolution crater distribution
Low resolution geology
Tiny resolution topography
Tiny resolution "snowfall"
Tethys
Mega Resolution Cassini
Low Resolution Voyager airbrush
Dione
Mega Resolution Cassini
Medium Resolution Voyager airbrush
High resolution water ice abundance
Tiny resolution topography
Rhea
Mega Resolution Cassini
Low Resolution Voyager airbrush
High resolution water ice abundance
Titan
Mega resolution RADAR SAR + Hyper Resolution Huygens landing site.
High resolution ISS mosaic
Super Resolution VIMS Infrared
Medium resolution:
Dune direction
Geology
Cloud Coverage
Low resolution:
Hubble
Emissivity
Tiny Resolution
Observed Scattering
Simulated scattering
Atmosphere (turn on Sun and Atmosphere to view actual color with haze and shading effect as seen in image below)
Hyperion
Medium Resolution Cassini
Low resolution Voyager Shaded relief
Medium resolution Voyager mosaic
Low Resolution Voyager Topography
Iapetus
Super Resolution Cassini
High Resolution Voyager airbrush
Phoebe
Medium Resolution Cassini
Placenames for all but Prometheus and Saturn (which have none)
Over 500 images from NASA's planetary Photojournal
Next up, Uranus and Neptune, which shouldn't take long since they weren't explored much like Jupiter and Saturn.