ABSTRACT
Venera Spacecraft landed on Venus and took some images of rocks of Venus. The thin, plate-like slabs of rock could be due to molten lava that cooled and cracked. The composition and texture of these rocks is similar to terrestrial basaltic lava. The weathering processes of rocks on Venus are due to the extremely high temperature and pressure at the surface, as well as the composition of the atmosphere. In-situ stress state is one of the most important items if rock mechanics and rock engineering are to be utilized on the Moon and other planets. Although the environmental conditions on Mars and other planets are different from those on Earth, the principles governing mechanical and engineering aspects of rocks on other planets should be quite similar to those developed for the rocks of Earth. As on Earth, slope stability issues would be of great significance in other extraterrestrial objects.
