Have you seen the RPG Cosmic Patrol, you play the roll of members of the eponymous Cosmic Patrol that take to the stars to protect earth from threats and explore the universe. A role playing game that aims to capture all of the feel of the Golden Age of Science Fiction.
The great part about Cosmic Patrol is that you don’t need a dedicated games master but each player takes a turn being the lead narrator and the game is aimed at being fast to play and easy to learn. Another nice touch is the short golden age style space patrol stories that are included in the rules.
Give it a go and if you like role playing and the game sounds like fun let me know and perhaps we can organize a round the world game via Skype! You can get the game in paper format from Amazon and in watermarked PDF from DriveThruRPG.