>>>>Talking of slow light, how come space cruisers rumble past the static observer, at about 10 mph, but are supposed to be travelling at space flight speeds?
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>>>It's all in the eyes of the beholder... i.e. the speed at which camera travels :).
>>
>>Note I said "static observer". I wouldn't mind if the stars were moving for us, the observers, and the ship's doing just 10 mph more than us, but that's rarely the case.
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>The stars only seem static. Their movement relative to the camera, however, is recorded below one pixel per scene. So I don't mind that - and there's enough of other stuff to tally.
>
>Like the abundance of gravity in space :).

But what if there's a huge planet in shot, and the ship is heading towards it? We can see that it's not moving in relation to the firmamment, ergo we're not moving.