Maru is Stardew Valley's resident eccentric and enigmatic alien. No one really knows where he came from, but his love of space-faring adventure is only matched by his love for gardening.
Maru's favorite hobby is collecting rare and exotic space rocks, which he displays proudly in his greenhouse.
You can visit Maru's Greenhouse here, where you can see his prized possessions on display.
Or, if you're feeling adventurous, try to find Maru's hidden spaceship here.