My first project for my computer animation class, I've never animated with the program we're using before, and the project is just an intro to the program project, so I think it was pretty good for a first. My teacher wasn't here today so I might make a few changes when I talk to him on Tuesday.
I added a screenshot of the last frame at the end because it's only 100 frames long and didn't have enough room for all the sounds (We're only allowed to use 100 frames for the time being) So that's why it might look a bit weird.

I made the turret using 3 ellipses for the body, a sphere for the eye, cylinders for the arm attachments and legs and really thin cubes and small spheres for the guns.

I made the Space sphere out of spheres and cylinders.

The random giant legs are made out of cylinders.

Program used: 3DS Max