Message to moderator(s): This question was deleted since it looks similar to a question in another SE. However, the question being asked in this SE is completely different. Would that be a strong enough basis to restore this post?
From this source, it states that:
Living spores have been found and collected in every level of earth’s atmosphere. Mushroom spores are electron-dense and can survive in the vacuum of space. Additionally, their outer layer is actually metallic and of a purple hue, which naturally allows the spore to deflect ultraviolet light. And as if all this wasn’t unique enough, the outer shell of the spore is the hardest organic compound to exist in nature.
With regards to a mushroom spore's electron density, having an outer metallic / purple layer, and the hardness of its outer shell, have these things been confirmed in biological experiments?