[b]The Lexites have their own set of ships that you'll get to see first hand.[/b]
[b]Of course the Tywom dress up like humans. Because: OF COURSE THEY DO.[/b]
[b]New weapons and other goodies come with part 2 that you can experience in battle.[/b]
[b]Encounter with a group of Lexites.[/b]
If you don't already have Star Control: Origins, you can [url=https://store.steampowered.com/app/271260]grab it here[/url]. Earth Rising is also available [url=https://store.steampowered.com/app/961150]here[/url].
The nice thing about Star Control being a non-linear "sandboxy" RPG is that you don't have to have finished the game to enjoy the expansion. In fact, you don't even have to have started the game to start experience the new content. It simply builds out the universe. What you do in that universe is up to you.