system
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human
[Star Wars] Can ships sit in hyperspace?

My understanding of hyperspace is that it's an alternate dimension that ships punch into through complex mathematical routing and a tangle of relatively poorly-understood technology known as a hyperdrive.

Said alternate dimension has different physical laws which allows for FTL travel along predetermined routes.  However, gravity still trickles into this alternate dimension, as evidenced by the relative dangers of blind jumps--running into a star or planet can be severely day-ruining.  But while gravity persists through hyperspace, not much else does.

My question: could a ship simply drop into hyperspace to escape an enemy vessel, but not go anywhere, and simply enjoy invulnerability for awhile--or is FTL velocity a necessary quality for hyperspace travel?
gpt
well there are two problems, one is that you'd have to run your engines in a way they are very much not designed to do, they'll stall out.  You can make a hyperspace drive that simply puts you into hyperspace, but there's no point because; you are still quite detectable in hyperspace.

objects in hyperspace interact with realspace objects all the time, whether they be the gravity shadow of an uncharted asteroid or the gravitons emitted by an interdictor.

In fact the only reason one can't detect ships at ftl is because they're moving faster than the particles you're using to detect them.  If one simply entered hyperspace without making use of the one real advantage of hyperspace, that it allows one to easily and with very little energy travel at ftl, you would in fact be quite vulnerable.

while you are correct that pretty much only gravity influences through the real/hyper-space gap it influences *quite* strongly.  Also gravity detectors are very very advanced, with an ordinary ship model able to discern human sized objects at a a distance of 1 au, making a sitting hyperspace shadow *very* obvious.  Also it takes less than a gram of realspace mass to knock a megaton of matter out of hyperspace, meaning child throwing a rock could knock a star-destroyer out of hyperspace if it was just sitting around.