This latest flyover video from the European Space Agency's Mars Express spacecraft, provides a stunning view of one of Mars' most eye-popping craters. This movie was created using an imagery from Mars Express' High Resolution Stereo Camera (HRSC). The images are normally taken looking straight down (nadir), and the video combines topography information from the stereo channels of HRSC to generate a three-dimensional landscape, which was then recorded from different perspectives, as with a movie camera, to render the flight shown in the video. Korolev Crater is 82 kilometers (50 miles) across and at least 2 km (1.25 miles) deep....