That is big! But thin.
But I figure a density of about 2 milligrams per cubic kilometer. What would that do if inserted between the earth and the sun?
A cylinder with the diameter of the earth, extending from earth to sun, would have a volume of about 1.9 x10^16 cu km - the cloud/ball in that volume would contain about 3.8 million tonnes of gas. How much would that reduce solar radiation reaching the earth? Maybe that would solve the global warming problem....