It is the blackest sea, no light, no sound, no air, no errant ships and it is night (of course) always night, but then there are the Sentienls

Beacons, relentless beacons

Beyond human language

Still

Sending out words of vigilance

Nonetheless

https://www.topverses.com/about/stars

https://en.wikipedia.org/wiki/Pulsar

https://en.wikipedia.org/wiki/Lake_of_fire