Here’s my conversation with Professor Chris Impey, head of the University of Arizona astronomy department, and author of “Beyond: Our Future In Space.” Among the many topics we covered:

  • How soon humans might live in space, such as on Mars or the moon;
  • What a space elevator is and how it could help us launch rockets further into space;
  • Whether humans could hibernate for long periods to make distant space travel possible;
  • Why humans have to go in space when we can send robots and control them like a video game;
  • What we should do about deflecting asteroids that might eventually be on a collision course with Earth.

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