An alien symbolizes something you are unfamiliar with in your real life, something you have never encountered before. Are you currently dealing with, what feels like, “unfamiliar territory?” What issue in your life seems foreign to you right now? Or are you the one feeling like an outsider lately?

If the alien is a threat to you in the dream, then you may be resisting something that is new and different in your life. If the alien is friendly, then that would reflect that you are at peace and even welcoming this new strange element in your life.

Keep in mind that aliens come from a different world and the alien in your dream may be a sign that your world, as you now know it, is about to change. It is up to you if you decide to welcome the change and explore the new possibilities or if you are going to fight the changes and remain stagnant.