Mom Nature shouldn’t buy into fantasy..The idea that a near hard vacuum could stop UV is one of those scientific fallacies. Blocking UV (and other radiation) are functions of density. For example, sitting right here, I’m getting 15% more irradiation from sun and space than I would get at sealevel. At about 1100m. Pilots and aircrew have far higher radiation doses than that, but are protected from UV by their aircraft. The main body of the atmosphere blocks most of the rays or we’d be cooked. I generally don’t have to wear sunscreen here at lower elevations, but it’s incredibly easy to get burned at 2000m in the hills above the town..It’s yet one more example of wasting incredible amounts of money to make a few rich, when we could have used the money for something constructive, such as cleaning up after the econuts get done burning forests down.