Russia’s future orbital station, if composed of add-on replaceable modules, may become "everlasting," Roscosmos CEO Yuri Borisov is quoted by the corporation’s news release as saying during a visit to the Cosmonauts Training Center. At a meeting with cosmonauts on Monday, Borisov discussed the outlook for creating Russia’s own future orbital outpost.

"Borisov said that replaceable add-on modules can make the space station everlasting, with a new generation of spacecraft employed to service its needs," the news release reads. Also, Roscosmos’ CEO is certain that although a future space station will be a national project, friendly countries may be invited to participate.

"I believe that the station should be open to friendly countries for international research," Borisov said.