German Satellites Fly Extraordinarily Close To Each Other In 3D Earth-Mapping Effort

Leave it to Germany to create the most detailed 3D map of the planet that has ever existed. Two satellites, TanDEM-X and TerraSAR-X, are flying above the surface of the planet to create the map. The thing is, the satellites are extraordinarily close to each other, getting as close as 350m away from each other as they cruise at a fine speed of 7km/s. buy endowment policy endowment protection sell my endowment policy