They’d been talking about the city’s sublight engines, and then suddenly they were going to graze the edge of this asteroid field, so I hoped someone would decide to do a small sublight engine burn to nudge their course out a bit further and maybe miss the asteroids altogether… but it was not to be.

The Stargate series are usually pretty good, plot-hole-wise. Often one character will suggest a Star-Trek-type solution to a problem only to be shot down mercilessly by someone else (almost invariably Rodney McKay, in Atlantis). Lazy Star Trek script devices - like deus-ex-machina escapes powered by Treknobabble - are pretty rare in the Stargate series.

But some dumb sci-fi tropes are apparently too powerful to escape.