CHRIS BUTLER / SCIENCE PHOTO LIBRARY CHRIS BUTLER / SCIENCE PHOTO LIBRARY
Artwork representing an unmanned mobile vehicle exploring the surface of Mars. Mars is the fourth planet from the Sun at an average distance of 230 million kilometres. It has a diameter of 6787km and the Martian year lasts about 687 terrestrial days. The atmosphere of Mars is mainly composed of carbon dioxide (95%) and nitrogen (2.7%). Daytime surface temperatures rarely rise above 0 Celsius and most areas experience minimum temperatures near -100 Celsius before sunrise. Several unmanned missions were launched to study this planet. Most of the data were gathered by the two space probes Viking 1 and 2 which landed on the Martian surface in August and September 1975.
Model release not required. Property release not required.