All adventures, especially into new territory, are scary.

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• Buzz Aldrin:

  I think humans will reach Mars, and I would like to see it happen in my lifetime.

• Jim Lovell:

  From now on we live in a world where man has walked on the Moon. It's not a miracle; we just decide

• Chris Hadfield:

  Ultimately, leadership is not about glorious crowning acts. It's about keeping your team focused on

• John Glenn:

  I don't know what you could say about a day in which you have seen four beautiful sunsets.

• Mae Jemison:

  Science provides an understanding of a universal experience. Arts provide a universal understanding

• Christa McAuliffe:

  I touch the future. I teach.

• Ellen Ochoa:

  What everyone in the astronaut corps shares in common is not gender or ethnic background, but motiv

• Alan Shepard:

  I'd like to say I was smart enough to finish six grades in five years, but I think perhaps the teac

• Gene Cernan:

  It's our destiny to explore. It's our destiny to be a space-faring nation.

• Scott Kelly:

  There are definitely parts of Asia, Central America that when you look at them from space, you're a