Robot Voyagers examines robots built to explore areas on the planet and in space where humans cannot go. Walking robots, for example, venture into volcanoes and crawlers burrow into earthquake rubble. Fantastic images show unusual robotic machines such as a fishlike underwater explorer and space robots that travel for years to the far reaches of the solar system. Highlights include
• the robotic explorers used on Mars, including the Viking probes of the 1970s and the later Spirit and Opportunity robots of this century
• underwater robots used in movies and television
• mining robots and probes
• how robots are sensitive to extremes in temperature