As a former Apollo astronaut, I think it's safe to say that SpaceX and the other commercial developers embody the 21st century version of the Apollo frontier spirit.

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• Rusty Schweickart:

  It would take an extremely large spacecraft to deflect a large asteroid that would be headed direct

• Rusty Schweickart:

  Landing on the moon was a dream that millions of kids have had for hundreds of years.

• Rusty Schweickart:

  There's no accepted global policy on what to do about asteroid impacts.

• Rusty Schweickart:

  It is through science that we understand the world around us, and by understanding the world around

• Rusty Schweickart:

  We have the capability - physically, technically - to protect the Earth from asteroid impacts. We a

• Rusty Schweickart:

  No government in the world today has explicitly assigned the responsibility for planetary protectio

• Rusty Schweickart:

  We're not passengers on Spaceship Earth. We're the crew.

• Rusty Schweickart:

  When you have an asteroid threatening Earth, it's uncertain where it's going to hit until the last

• Rusty Schweickart:

  Asteroids are deep-space bodies orbiting the Sun, not the Earth, and traveling to one would mean se

• Rusty Schweickart:

  It is fantastic to think that one day we may be able to access fuel, materials and even water in sp