Why don’t blimps just keep going up?
I could google it but I don’t want to. I know nothing about blimps but I think they use helium or hydrogen or something? If it’s helium how does it not just keep going up forever?
I could google it but I don’t want to. I know nothing about blimps but I think they use helium or hydrogen or something? If it’s helium how does it not just keep going up forever?