The REAL reason why aliens haven't been able to contact us

No.14428518 ViewReplyOriginalReport
They are actually trapped in their own planets, it's very likely that multicellular complex intelligent life develops the most on super-earths with higher gravity (thus a better magnetosphere), less mountains in the landscape, shallow oceans (or not) and a greater biodiversity, a K-type star would provide ideal conditions

This would mean that they would be taller than us, stronger but also more burdened due to the high-gravity, trying to escape the planet down from the surface up to the sky and space would be incredibly difficult, which means they are literally imprisoned by their own large planet