Overall, I like what I see here. It's a little rough but stuff like what is mentioned can be improved. You built a ship with the ability to fly to other planets and that's awesome! Outside what others have mentioned about same tasks here are some points of contention for me:
1. Controls - No need to walk left/right if you can just rotate in those directions. At some point I ended up not even rotating the player because it was just too confusing and easier to just walk in a direction. The rotation is the opposite of what comes intuitively for me. Also right clicking to jump seems strange?
2. UI - Needs a grammar check, quite a few typos
3. Sounds - Needs sounds to help build the atmosphere. If you have technology, some simple beeps and boops would help make the ship feel more alive.
4. Visuals - When in Space I would expect to see some stars? Perhaps a skybox that is rotating to simulate movement?