Picture I http://crisisofdemocracticstates.blogspot.com/p/one-version-of-dysons-sphere-what-can.html Kimmo Huosionmaa In some cases, the people think, those giant spaceships like artificial worlds, what might look like giant cylinders and the layers of those giant devices would be plantages for food and even rivers and lakes, for making the travel or being in Universe more comfortable. In some scenarios, those giant space stations would be stationed in the Lagrange-point, where the gravity of the Moon and Earth have the same strength. In that point, the large space station would stay without the need to use rocket motors, and the giant structure might be the balloon, what would look like Echo-satellites. Inside this plastic balloon would be installed the net, and the cement, what would make possible to make plantages inside it. But there would be one thing, what could be possible. That kind of giant space station or spacecraft could operate also in the atmosphere of Earth,...