Better than sci-fi! The wonders of the universe are limitless, even though we only get an occasional peek.
One cool fact:
Although towering about one kilometer high, the low surface gravity of Comet CG would likely make a jump from the cliffs by a human survivable.

Yes… It will take you nearly 13 minutes to fall that 1,000 meters. In the final moment, you will be traveling approximately 8.5 feet per second (2.6 m/s). Keep in mind that on Earth, you accelerate about 32 feet per second for every second you fall, so at the end of one second, you will be traveling about 16 feet per second… nearly TWICE as fast as after accelerating for nearly 13 minutes!
I once fell nearly 12 feet off a ladder to the ground. oddly enough, that amounts to about a 0.8 second fall, with a final speed of nearly 28 feet per second! (I need hardly add that I survived the fall.)
[I’m working off of Wikipedia for physical characteristics, and about ten years out of practice on the ballistics, but I think I’m within an order of magnitude, anyway!]
Keep in mind – those figures only apply in a vacuum – which on the comet is applicable. Your fall from the ladder was not in a vacuum so you will need to adjust for air resistance.
Cheers!