20 December 2012 The third dimension - Tokyo Over time, the
megacity of Tokyo has grown out of an entire cluster of cities;
surrounding urban areas such as Yokohama and Kawasaki have
sprawled out towards the Japanese capital, forming a gigantic
metropolitan region inhabited by over 34 million people. Almost
a quarter of Japan’s population resides on Tokyo Bay. Among
other things, this image from the TerraSAR-X radar satellite
shows some imposing high-rise buildings on an island in the
river and, to the lower left, St. Luke’s Tower, a 220-metre-
high, 51-storey building, connected to the adjacent, lower
residential high rise by a bridge that crosses over 100 metres
in the air. DLR (CC-BY 3.0). TanDEM-X has completely captured
the Earth - strip by strip A year after the initial operational
phase, TanDEM-X has mapped all land surfaces on earth except
Antarctica completely. Elevation models have been generated with
the data. According to the color scale, green tinted areas
already comply with a the requirement of