Which season is the Transformers that went into outerspace?

I kind of remember vaguely that Prime wasn't in it as he was either frozen or something.They still had starscream I think ,but the main protagonist was somewhat different.I think the Decpticons had a different leader in this one.Which season is the Transformers that went into outerspace?Through out the entire series of The Transformers Autobots and Decepticons traveled into outer space. Whether it was going to other planets or traveling back and forth to cybertron. Though by what you've described is probably season 3 and 4, which its episodes, most of the time, aren't set on Earth. The last two season takes place after Transformers: The Movie. Seasons 3 and 4 follow the story set up by the movie. Optimus Prime is killed and is replaced by Rodimus Prime. And you are right, the leader of the Decepticons is a little different. It's a rebuilt version of Megatron named Galvatron. Starscream was in a few of the later episodes but he appeared as a ghost.Which season is the Transformers that went into outerspace?it might be the 80s movie were primes dead and the leader of the decpticons is galvatron and rodimus prime is the leader of the autobots and they fight unicron. hopes this helps