WALTER MYERS / SCIENCE PHOTO LIBRARY WALTER MYERS / SCIENCE PHOTO LIBRARY
Mission to Mars. Computer artwork of astrogeologists in manned manoeuvring units (MMU) collecting samples from the surface of Phobos (upper right), the largest moon of Mars (upper left), during a hypothetical future mission to study its geology. The astronauts command module, an Orion crew exploration vehicle, can be seen at centre left.
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