Most of you have, by now, read the stories, including good ones by Bill Broad (who had it first) and Joel Achenbach, about the catastrophic (and possibly cascading) collision between an Iridium satellite and a defunct Russian Cosmos satellite. Geoff Forden here at Arms Control Wonk and Josh Pollack, newly installed at Total Wonkerr, are leading the discussion.

I’ve spent the last eight years listening to ideological rants about preserving our “freedom of action” in outer space. And by “freedom of action,” the speaker always means something very narrow — the right to deploy orbiting death rays or moon bases or some other nonsense.

I’ve always replied that the most pressing threat to our freedom of action in space isn’t someone shooting down one of our satellites or a ban on space-based missile defenses, but the sort of collision that happened on Tuesday: More countries launching more satellites, threatening the sustainable use of outer space by crowding the most valuable orbits with satellites and orbital debris.

The real challenge posed by the growing number of space-faring states relates to more mundane problems such as the growth of debris and orbital crowding. Failure by new space-faring states to operate responsibly could challenge to US freedom of action in outer space.

The implication of this is straight-forward: If you believe the most dangerous threats to our satellites basically arise from an increasingly crowded orbital environment, rather than nefarious plots, then we must cooperate with other countries to manage these problems and preserve the orbital envrionment. Cooperation requires rules, some of which might have to be embodied in a treaty.

The loss of the Iridium satellite, in a collision with a defunct Russian Cosmos satellite, should make clear that the United States needs to play a leadership role in putting into place the institutions necessary for managing orbital space, from cooperative data sharing to codes of conduct to, yes, treaties.

Late Update: David Wright has posted a background paper on the UCS website.