MarkWhittington writes: The current NASA thinking concerning the Journey to Mars program envisions a visit to the Martian moon Phobos in the early 2030s before attempting a landing on the Martian surface in the late 2030s, as Popular Mechanics noted. The idea of a practice run that takes astronauts almost but not quite to Mars is similar to what the space agency did during the 1960s Apollo program. Apollo 8 and Apollo 10 each orbited the moon but did not land on it before the Apollo 11 mission went all the way to the lunar surface, fulfilling President John. F. Kennedy's challenge.
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