Existing comment:
MARS - A HABITABLE WORLD?
The iconic globe of Mars, with surface relief exaggerated ten-fold. Mars is similar to Earth, with icy polar caps, an atmosphere, and a surface marked with deep canyons and enormous volcanoes. But on Mars, water is scarce and the atmosphere is thin. The symbols on the globe identify the locations of the NASA rovers: Curiosity (square), Spirit (triangle) and Opportunity (circle). |