Germany's new radar satellite, TanDEM-X, has returned its first images. The spacecraft was launched from Kazakhstan on Monday on a mission to make the most precise 3D map of the earth's surface. The pictures demonstrate the platform is in excellent health and ready to team up with the TerraSAR-X satellite launched in 2007. Together, the pair will trace the variation in height across the globe to a precision of better than two metres.<br/>