To understand how far we went forty years ago, on how little technology, consider this: Our modern smart phones have 200,000 times more power than the computers that took men to the moon.

Let me restate that: Space travel can be accomplished with forty-year-old technology.

It is tragic beyond measure that human exploration has been neutered since 1972. Sure, we’ve sent out a few probes and placed a good telescope in orbit, but we have done nothing brave, nothing bold, nothing daring.