Rochester

SOMETIME this year Voyager 1, a probe sent from Earth 35 years ago, will cross a threshold no human-fashioned object has reached before. Passing through a sun-driven shock wave at the edge of the solar system, it will reach the icy dominions of interstellar space. Voyager is one of the fastest vessels we’ve ever blown out of Earth’s gravity well. Still, after three and a half decades of hyper-velocity spaceflight, it will take another 700 centuries for the craft to cross the distance to the nearest star.

Short of a scientific miracle of the kind that has never occurred, our future history for millenniums will be played out on Earth and in the “near space” environment of the other seven planets, their moons and the asteroids in between. For all our flights of imagination, we have yet to absorb this reality. Like it or not, we are probably trapped in our solar system for a long, long time. We had better start coming to terms with what that means for the human future.

Of course, we know this, on some level. But in a culture saturated with inbred notions of “progress” and an obsession with worlds seemingly just beyond our grasp, there is an expectation that sooner rather than later, we will be building an interstellar culture. In a kind of cosmic version of Manifest Destiny we assume that, unless something terrible happens, our science will be taking us to the stars sometime in the next few hundred years. Simply say “warp drive” to just about anyone and see if they know what you mean.