An ever-growing number of experiments is exploring the remaining axion parameter space, with the exciting prospect of discovering theoretically preferred QCD axion models. Focussing on helioscope searches, which employ strong magnetic fields to detect axions coming from the Sun, I will talk about the prospects for discovering axions, studying their properties and UV structure, as well as learning more about the Sun’s interior. I will explicitly demonstrate the latter based on simulated data for the upcoming helioscope experiment IAXO. Finally, I will conclude by discussing ongoing work on leveraging the complementarity of other experimental approaches after a discovery.