Kryovulkan
Kryovulkan eller isvulkan er vulkaner, der i stedet for aske og magma udspyr flygtige stoffer som vand, ammoniak og methan. Kryovulkaner findes på solsystemets måner med kolde overflader og blev først observeret på Neptuns måne Triton af rumobservatoriet Voyager 2 i 1989. I 2005 fotograferede rumobservatoriet Cassini geysere på Saturns måne Enceladus. Efterfølgende er kryovulkaner set på andre ismåner i solsystemet som Jupiters måner Europa og Ganymedes, på Saturns måne Titan og på Uranus´ måne Miranda. Man regner også med at der er aktive kryovulkaner på Plutos måne Charon, fordi rumobservatoriet Gemini har vist områder med ammoniak og is.
Medier brugt på denne side
Fountains of Enceladus PIA07758.jpg
Fountains of Enceladus Recent Cassini images of Saturn's moon Enceladus backlit by the sun show the fountain-like sources of the fine spray of material that towers over the south polar region. This image was taken looking more or less broadside at the "tiger stripe" fractures observed in earlier Enceladus images. It shows discrete plumes of a variety of apparent sizes above the limb of the moon.
Fountains of Enceladus Recent Cassini images of Saturn's moon Enceladus backlit by the sun show the fountain-like sources of the fine spray of material that towers over the south polar region. This image was taken looking more or less broadside at the "tiger stripe" fractures observed in earlier Enceladus images. It shows discrete plumes of a variety of apparent sizes above the limb of the moon.
Sotra Facula.jpg
Doom Mons and Sotra Patera, apparent cryovolcanic features on Titan. Topography has been vertically exaggerated by a factor of 10. The false color shows different surface material compositions as detected by Cassini's visual and infrared mapping spectrometer.
Doom Mons and Sotra Patera, apparent cryovolcanic features on Titan. Topography has been vertically exaggerated by a factor of 10. The false color shows different surface material compositions as detected by Cassini's visual and infrared mapping spectrometer.