Thanks! u/YearninNation :
All the good conspiracies are already proven true. One of my fav's is that the colors in the sky are due to noble gases ionizing in the upper atmosphere like neon signs...it'd be the argon that makes the blue...4th most abundant element in the atmosphere btw...also like the one that says you cannot see stars in space...and cosmic mildew 2.0 is epic.
https://communities.win/c/Conspiracies/p/1ASZMK5XyJ/round-table-discussion-submissio/c
Should be easily testable with a spectrograph and an argon light.
Just look at the spectrum of the argon light, and then look at the spectrum of the sky. If the sky has the same peaks as the argon light, without much more background in the blue spectrum than the argon light, your theory is true.