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In brief : Io's ups and downs

点击量:   时间:2017-05-08 08:02:12

A LANDSLIDE the size of Belgium is giving an insight into the workings of one of Jupiter’s moons. Io is home to active volcanoes resembling those on Earth. But one of them, Euboea Montes, looks oblong from above and is smooth on one side and rough on the other. Paul Schenk of the Lunar and Planetary Institute in Houston suggests layers of volcanic detritus compressed the crust below, making it rupture upwards (Science, vol 279, p 1514). “A block has been uplifted and tilted,