Space adventure is an American space tourism company founded in 1998 by Eric C. Anderson. Its offerings include zero-gravity atmospheric flights, orbital spaceflights (with the option to participate in a spacewalk), and other spaceflight-related experiences including cosmonaut training, spacewalk training, and launch tours. Plans announced thus far include sub-orbital and lunar spaceflights. Seven of its clients have participated in the orbital spaceflight program with Space Adventures, including one who took two separate trips to space.