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Danh ngôn của Michael J. Massimino (Sứ mệnh: 2)

For me, the Earth had always been a kind of a safe haven, you know, where I could go to work or be in my home or take my kids to school. But I realized it really wasn't that. It really is its own spaceship. And I had always been a space traveler.
I think most astronauts are not risk takers. We take calculated risks for something that we think is worthwhile.