I have done stuff like this before but with these kind of categories I would say:
Aries- Fire powers definitely, like a fire bender or enhanced combat.
Taurus- A Taurus would have powers of Precognition, can manipulate life force, or even have almost vampire abilities when it comes to getting someone attracted to them or in a trance.
Gemini-I think would have the ability to manipulate energy, electricity, and technology. Short term illusion powers like splitting into two or making it seem like they are standing somewhere else when they aren’t (like loki) Also sound manipulation. (I would agree with stars/galaxy except Aquarius is associated with that more).
Cancer- water manipulation, healing magic, blood manipulation (like blood bending), or witchcraft like abilities, and even lunar manipulation.
Leo- magic with light, super strength, and possibility immortality.
Virgo- earth pending, plant bending, and using magic to perfect skills, appearances, etc.
Libra- air manipulation, enhanced vision, or force field powers.
Scorpio- necromancy, darkness manipulation, telepathy, invisibility, ice magic, and emotion manipulating.
Sagittarius- teleportation, super speed, and time manipulation.
Capricorn- enhanced senses, shape-shifting, and biological manipulation.
Aquarius- star magic, astral projection abilities, gravity manipulation, and chaos powers.
Pisces- telekinesis, reality warping, illusions, and psychic.