there's no doubt it's also possible.  4 background shifts in radiation, 3 caused by humans, in 2019. > solar minimum,  the quietist sol has been for flares in recorded history (something like 3 months without a single flare) increased the background radiation of high-energy particles from the rest of the universe because flares are ion/gas burps of atoms that cause scattering before they reach earth. > russian nuclear cruise missile detonate/breakup in high atmosphere over northern russia > 5g rollout (my personal greatest concern) placing high energy microwave light bulbs every 100 meters on every block, with nobody mapping reflection/refraction points, carried in our pockets, and mounted on our fucking cars, because our cars need to have 5g wifi... > radar/lidar in 5g spectrum for cars these 4 changed the background radiation for humanity in 2019-2020, and continuing.
United States