We do not know when, if ever, The Great Space Coaster will be released on DVD. The problem is that the show used a lot of great music that would need to be re-licensed if the show were ever released. This is extremely expensive, so a DVD release would probably cost more to make than it would ever earn. These same challenges with the rights prevent us from uploading episodes to the internet for public viewing at this time. We are working on this, though!