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Mount Melbourne

Mount Melbourne is a 2,733-metre-high (8,967 ft) ice-covered stratovolcano in Victoria Land, Antarctica. It is an elongated mountain with a snow-filled summit caldera and numerous parasitic vents; a volcanic field surrounds the edifice. Mount Melbourne has a volume of about 180 cubic kilometres (43 cu mi) and last erupted between 1862 and 1922. Its volcanism is related both to the West Antarctic Rift and to local tectonic structures such as faults and grabens. Mount Melbourne has mainly erupted trachyandesite and trachyte, which formed within a magma chamber; basaltic rocks are less common. Geothermal heat flow on Mount Melbourne has created an unusual ecosystem formed by mosses and liverworts that grow between fumaroles, ice towers, and ice hummocks. This type of vegetation is found at other volcanoes of Antarctica and develops when volcanic heat generates meltwater from snow and ice, thus allowing plants to grow in the cold Antarctic environment. (Full article...)

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Orii Hyōjirō
Orii Hyōjirō

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Webb's First Deep Field
Webb's First Deep Field

On this day

July 12

German tanks at Prokhorovka
German tanks at Prokhorovka
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St. Peter and Paul Cathedral, Brandenburg

St. Peter and Paul Cathedral, also known as Brandenburg Cathedral, is the largest medieval church in Brandenburg an der Havel in the German state of Brandenburg. Construction began in 1165 as a Romanesque aisleless church (Saalkirche), and it was later expanded to a three-aisled, Brick Gothic basilica. Its patron saints are Saint Peter and Saint Paul the Apostle. This photograph depicts the cathedral's nave, with white vaulted ceilings and red brick archways, windows, and floor, filled with rows of wooden chairs.

Photograph credit: Mathias Krumbholz

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