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.
Mount Wilhelm Christophersen Mount Wilhelm Christophersen ( ) is a mound-shaped, ice-covered landform which rises from the edge of the polar plateau 6 km south of Antarctica's Mount Engelstad. The mound also overlooks the south side of the head of Axel Heiberg Glacier. It was discovered in 1911 by the Norwegian explorer Roald Amundsen and named by him for Wilhelm Christopher Christophersen, the Norwegian diplomat and Minister in Buenos Aires at that time.