Dreaming of being a stormtrooper from Star Wars and finding yourself floating in space can symbolize a few key themes.

1. Loss of Control: Being booted off a spaceship suggests a feeling of being cast away or losing control over a situation in your waking life. This could relate to feeling unimportant or undervalued in a group setting, similar to the often expendable nature of stormtroopers.
2. Isolation: Floating in space might represent feelings of isolation or separation from others. You may be experiencing a period where you feel disconnected from friends, family, or your social circle.
3. Exploration of Identity: As a stormtrooper, you are part of a larger force, yet in space, you are alone. This might indicate a struggle between wanting to belong to a group and the desire to find your own identity outside of societal expectations.
4. Adventure and Change: Space can also symbolize new beginnings or adventures. Perhaps you are on the verge of a significant change in your life, and the dream reflects your feelings about stepping into the unknown.

Consider reflecting on your current life circumstances and how they may relate to these themes. It might be a good time to assess your connections with others and explore your own identity further.