If you like the premise of the movie, many believe the concept was directly taken from Warhammer.
‘Event Horizon’ is still a classic for Warhammer fans - The Clarion
Ships that would travel into deep deep space would be susceptible to The Warp without the protection of a ships Gellar field. (fukk around in the Warp without protection and find out )
The Gellar Field Device emits an energetic, invisible force field comprised of unknown subatomic particles called a Gellar Field, which essentially maintains a bubble of real space-time around a starship travelling through the
Warp using the power of its sublight drives after utilising its
Warp-Drive to pierce the veil between the physical universe and the Warp.
Since entities native to the
Immaterium cannot breach its boundaries to enter the physical universe except under certain very specialized circumstances, creatures native to the Warp are repelled from the boundaries of the projected Gellar Field.
Warp entities would tear the starship apart to reach and consume the souls of the mortal crew. As such, the field must be active at all times. For the field to work, the starship must be entirely sealed; no open entrances that would breach the field's protective envelope are allowed.
The weakening, failure, or collapse of its Gellar Field while a starship is transiting through the Warp would be completely disastrous, as was discovered by the crew of the
Imperial frigate
Eisenstein during its famous flight to
Terra from the
Battle of Isstvan III to tell the
Emperor of Mankind of the betrayal of his favoured son
Horus.