Should I do high school physics or astronomy?

Hey guys and gals this question has been bothering me for months should I do high school physics or astronomy, I know quite a bit of astronomy especially about blackholes, asteroids, stars/suns and gas giants but I have a keen interest in physics especially the physics of rockets,gravity and space objects but compared to astronomy my knowledge of physics is limited. It is high school so I'm not expecting to be able to do a masters in either category but it would be nice to get a second opinion