Who has told that it is not possible to walk on the cellar?

There are a lot of interesting options that you can use while you are on a vacation. If you have the spirit of thrill in you the best choice would be space training programs in Star City, Moscow area. Here you can see one of our clients performing Zero-gravity flight and enjoying it. While on Zero-gravity flight you will be able to feel absolute weightlessness about ten times. The airplane cabin is specially designed to prevent any injures.