Not sure if this is a question for SciFi SX or Physics SX.
In Star Trek Discovery (Season 1 Episode 9) the USS Discovery (aka good guys) are in war with the Klingons (bad guys). The bad guys have some technology which renders their space ships invisible. While trying to crack their invisibility cloak here is the explanation offered by a character on how it works:
We suspect the Klingon Cloak generates a massive gravitational field, one the that bends light and other electromagnetic waves around the ship.
Clever, so if light/EM waves cannot hit it (gets warped around, maybe something like gravitational lensing around a black hole?) so it's not possible "see" the ship. My question is does that hold up?
I mean not the fact they can generate such as massive gravitational field, let's assume they can. A couple of things:
From the "Bridge" of the enemy warship they can see outside and see the planets and the USS Discovery. But won't light outside also be so convoluted as it falls into the dense gravitational hole of the ship that it would simply be impossible to resolve "shapes"?
They say to detect the ship while cloaking they need to plant sensors and run the data via complex algorithm (note: they get the data while the cloak is so off, so sensor data can reach the USS Discovery). But why go to that length? Won't it be easy to detect massive gravitational fields easily?
Just want to satisfy my curiosity and understanding, not looking to nitpick a TV Shows science.