NASA's senior management gave unanimous approval Wednesday to a preliminary design review for the Ares I rocket intended to carry astronauts to the moon by 2020. The preliminary design review focuses on safety, as well as ensuring that design, plans and software work together properly. "This is where we wrap the entire vehicle together to say we have a sound design from stem to stern," said project manager Steve Cook in a Wednesday evening teleconference. "It's really a big step in our journey to launch."

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