New Mars exhibit at Carnegie Science Center looks at the Red Planet | Entertainment

PITTSBURGH—The late astronomer Carl Sagan once observed that “through 99% of our time on Earth, we have been wanderers, and the next place to visit is Mars.”

It’s probably inevitable that one day man will attempt to reach the Red Planet that looms in the heavens more than 50 million miles away. It will be an enormous undertaking, and that’s almost certainly an understatement – it will take nine months to get there, and nine months to get back. For that investment of time, a crew would probably want to stay more than a day or two. Setting up a permanent colony would be a colossal endeavor.

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