In which year was the moon, on which the volcanic feature Reiden Patera is located, discovered ?
Reiden Patera Reiden Patera is a volcanic feature on Jupiter's moon Io. It was first detected by the "Galileo" SSI Team during the spacecraft Galileo's first orbit around Jupiter, initially detected as a hotspot. It was once thought that the activity there had stopped or waned below the limits of the spacecraft's Solid State Imager or Near-Infrared Mapping Spectrometer. However, it was noticed in 2002 that Reiden Patera has darkened considerably since the 24th orbit of "Galileo". It has been spouting bright red pyroclastic deposits of its own. It is located at and is 70 kilometers in diameter. It is named after a Japanese thunder god ("Raijin" in current English nomenclature). Asha Patera can be found to the east, and Kami-Nari Patera can be found to the north.
Rayya (crater) Rayya is an impact crater on the southern hemisphere of Saturn's moon Enceladus. Rayya was first observed in "Cassini" images during that mission's March 2005 flyby of Enceladus. It is located at 32.5° South Latitude, 178.4° West Longitude, and is 9 kilometers across. "Cassini" observed numerous criss-crossing sets of fractures cutting across Rayya, forming canyons several hundred meters deep along the crater's rim.