I remember one episode that had all of the Space Stars teaming up together. If I remember correctly, the Herculoids were captured and Space Ghost and the rest had to free them.

The kids on the space bikes were called TEEN FORCE. I have been looking for this cartoon on DVD/VHS for YEARS! I have searched online & checked at some comic conventions, with no luck, though I did find the intro to the show on Youtube. If anyone has this show, email me at sams_eyes at yahoo dot cm

Good Lord, I love this site. Yet another childhood memory validated! I remembered people riding these bike-like vehicles in space and turning into comets! I'm not crazy after all!