A ROCKET EXPLOSION at Mojave Airport. Scaled Composites is there, but so are a number of smaller rocket companies; not clear yet what happened. Explosions are a part of the rocket business, alas.

UPDATE: Jeff Foust posts that TV reports say that it was an accident at Scaled Composites.

ANOTHER UPDATE: More from Rand Simberg.

MORE: Meanwhile, reports of sabotage and drinking at NASA.

STILL MORE: Via Rand Simberg, a Friday morning update. It was a “cold flow” test using nitrous oxide that appears to have accidentally ignited; since no ignition system was present it was probably a spark or something. They’re now saying three dead, all Scaled Composites employees. May they rest in peace.

In truth, this is a pretty routine industrial accident, of the sort that’s basically inevitable when you’ve got activity of any significant size using things that can explode — it’s just the space connection that gets it the attention. Let’s hope the various bureaucrats and politicians don’t see this as an opportunity to make themselves feel important at the expense of the industry. (Bumped).