Heliospheric and cosmic dust science with Interstellar Probe and with missions inside the solar system

Cosmic dust particles with sufficiently high charge-to-mass ratios interact with the heliosphere on both global and local scales due to the coupling of the charged dust with the heliospheric plasma. They are the fingerprints of heliospheric phenomena, and are tracers that can set boundary conditions to heliospheric models in addition to plasma, magnetic field or other measurements like galactic cosmic rays. This talk highlights (1) the synergies between the heliospheric and dust science, (2) the dust model predictions and (3) measurement requirements for dust measurements with an Interstellar Probe in different regions inside and outside of the heliosphere. We discuss how the choice of trajectories and launch date can affect the measurements and the science goals. Answering pressing questions concerning the dust-heliosphere interactions requires a multi-mission approach with missions inside the solar system as well. We therefore present interstellar dust impact predictions for the Destiny+ mission, and we illustrate how we aim to infer information about the heliosheath filtering using the data and simulations. Finally, we conclude - and highlight with some examples - why heliospheric/plasma physics and dust science go hand in hand, in particular for future mission proposals. We illustrate this with specific examples like the DOLPHIN and SunCHASER mission concepts and an instrument on the Lunar Gateway.