Yes, it's definitely worth picking up, especially if you enjoy turn-based combat. Stars in Shadow isn't a terribly deep game, but it's fun, easy to learn, has decent AI, and it doesn't take very long to complete a game.
For advice, don't play as Humans your first time through; they actually have the most difficult start & play-style in the entire game. Play as the Ashdar Colonials instead, as they're more your "standard" empire; playing as them is a good way to get a feel for the game.