... References . Stooke, P. J. and Lumsdon, M. P., "The Topography of Janus," Earth, Moon and Planets , 62 (1993), 223-237. Saturn Epimetheus Mimas . ...
... The spacecraft gathered data on the atmospheric composition, density, pressure, and temperature and also the surface composition, temperature, and topography of Mars. ...
... The Venera 15 and 16 radar (radio) altimeter systems were identical, and were used to determine the topography of the surface of Venus from the north pole down to about 30њN latitude. ...
... extend over great distances, following the local topography [Asimow and Wood, 1992 ... travel and the fact that they follow the topography suggest that they consist of low ... Their direction is controlled by the local topography. ...
... Well shown at this resolution of 660 meters (2,160 feet) are numerous ridges and valleys -- a topography that was probably produced by compressional tectonics. ...
... Surface topography was estimated by noting irregularities along the limb and at the terminator (day/night boundary) where shadows are enhanced by the low Sun angle. ...