The Next Step?

The Next Step?
The Next Step? Apollo 15 astronauts photographed the Aristarchus-Prinz region of the Moon from their command module. Crater Aristarchus, about 40 kilometers in diameter, is at upper right. In the foreground are the lava-drowned, ruined ramparts of the ancient crater Prinz and the mysterious network of rilles believed to result from more recent volcanic activity. AS15-2607, courtesy JPL/NASA

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