Snow Globes and Dyson's spheres To this text is connected the image of the Snow Globe. Some inventors have created the idea to make the artificial gravity to spacecraft by using small bubbles, which are rotating the spacecraft on the top of the long tubes. In some drawings, those bubbles are looking like church bells, but as you know those things are the only hypothesis, that is made for theoretical purposes. When we are thinking about the extreme long spaceflights the fresh food is one of the most complicated things, because it's hard to grow vegetables in the zero-gravity conditions. So the idea is to install two greenhouses to the body of spacecraft, and they can rotate it on the top of the long tubes. If the greenhouse would be away from the crew cabins, that denies the danger, that some mushroom would start to expand in the cabin. And the things like hummus would not be released in the capsule, where the crew would stay, and destroy computers. In the simplest