Being creators of this site, we strive to make not only user-friendly, but also completely legal, not violating anyone’s intellectual property rights. All the works by Konstantin Tsiolkovsky currently are in the public domain.

Nevertheless, if you believe that you are the copyright holder of some content posted on the website www.tsiolkovsky.org or you have a claim regarding the content, please contact us immediately.

Your claim will be promptly reviewed, and we will settle the issue as soon as possible.