

Abstract: The idea of using the Sun to probe dark matter, first proposed in 1985, continues to motivate both theoretical studies and recent experimental searches. In this talk, I will review the physics of dark matter capture and evaporation in the Sun. I will then highlight current experimental constraints on DM interactions with Standard Model particles, as well as my own contributions to searches for DM–electron and DM–proton scattering and for strongly interacting millicharged dark matter, using neutrino and gamma-ray observations as messengers. Finally, I discuss Jupiter as a complementary laboratory: not only is its interior far colder than the Sun's, but its metallic hydrogen mantle and rocky core host degenerate electrons whose Fermi–Dirac distribution Pauli-blocks the up-scattering processes that would otherwise eject captured dark matter. Together, these effects push the evaporation mass floor for leptophilic dark matter down to the MeV scale, opening a new window onto sub-GeV dark matter with current and future observations.
