[thinkyfish]

Here is a video talking about molecular chirality and how nature really only produces one version of molecules https://www.youtube.com/watch?v=SKhcan8pk2w. If it picked up the molecules in the atmosphere those atmospheric molecules should have been made by life on earth and those have a handedness bias depending on the molecule, some are produced right handed only or left handed only because they are made one atom at a time and need to be one handed for life to use them. Abiotic synthesis produces a 50/50 bias of left and right handed molecules because they are made all at once.