Women on the Moon: NASA Introduces Half-Female Class on Anniversary of Sally Ride's Historic Journey

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The sky's the limit on the puns, so let's just say: On Monday, NASA introduced its newest class of astronauts, and a record half of these "Elite 8" are women. We need them: Of the 534 humans who have travelled in space, only 57 have been women. That said, the concept of a female astronaut is anything but alien (sorry). Shuttles from all parts of the space-exploring world have carried female passengers, pilots, commanders, and space-walkers. Click through to meet some of the women who paved the way for this year's NASA class.

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