Celestis, Inc. is a company that launches cremated human remains into space, a procedure known as a space burial. It is a subsidiary of the private space company Space Services Inc. The company purchases launches as a secondary payload on various launch vehicles, and launches samples of a person's cremated remains. Launching an individual's entire cremated remains (which weigh between four and eight pounds) would be prohibitively expensive for most people, so Celestis launches 1 gram or 7 gram samples of cremated remains so as to provide an affordable service.