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sunnyside wrote: As for asteroids and whatnot, that's what the navigational deflector is for. If an asteroid is too big for that you should detect the thing far enough away to either alter course or use a tractor beam.

Unless the asteroid has a large enough gravity field to blind the gravity sensors (from "Relics", where the Dyson Sphere did exactly that).

I always thought the naf deflectors were designed to handle the more typical spaceborne hazards - micrometeroids, dust, etc. Isn't that why the big E had to use phasers on the asteroid that got pulled into the wormhole with it in TMP?