The Nuclear Threat From Space | Bill Hennigan

What would actually happen if a nuclear weapon were detonated in space?

This isn't just the stuff of science fiction — it's a scenario that researchers have studied closely, and the implications are deeply unsettling. From disrupting satellite a nuclear detonation in space would have immediate, global consequences — even without a single casualty on the ground.

In today’s episode, we’re exploring how our growing dependence on space-based infrastructure — for communications, surveillance, and national security — is changing the conventional calculus around nuclear deterrence.

How are major nuclear powers, including Russia, responding to this shifting landscape? Are we on the verge of a space-based nuclear arms race? And what can be done now to preserve space as a peaceful domain?

My guest is Bill Hennigan, author of the At the Brink series, which We recorded this conversation live at the Carnegie International Nuclear Policy Conference — and it’s a fascinating look into how the nuclear order may be evolving in ways that are still underappreciated.

The episode is freely available on Apple Podcasts, Spotify, or wherever you listen to podcasts.

We recorded this conversation in conjunction with the Carnegie International Nuclear Policy Conference. You can find all episodes in that series here.