Hi everyone, I'm matriculating at a local university in Physics in a few months and my ultimate goal is to do a PhD in astronomy/astrophysics at a reputable US university after I graduate. I am aware research experience as an undergraduate is paramount in securing a good PhD spot and I have plans to conduct research. However, my school does not have an astronomy department at all and only basic introductory modules are taught such as general relativity, cosmology and black hole physics etc. I believe there are a few lecturers knowledgeable in these areas but I don't think much meaningful research that is worth citing in my PhD application can be done. Although I have some opportunities to do overseas research attachments/a final year project as part of a research program, which I will in a university that is strong in astronomy, I need some advice on what fields in Physics I could research on back at my home university that is closely related to astronomy and will be useful to me. Areas of research the department is strong in are biophysics, condensed matter, quantum technologies and optics/lasers, fluid dynamics, complex systems, nanotechnology and computational physics (I don't actually fully understand what some of the fields are about honestly). Thanks so much for your time!