Whitepaper #375 in the Decadal Survey for Solar and Space Physics (Heliophysics) 2024-2033. Main topics: basic research. Additional topics: outer heliosphere; space-based missions/projects; emerging opportunities.
What is the global shape of the Heliosphere, especially in the Heliotail, and how does the ISM interact with, penetrate, and affect the composition of the Heliosphere? * Better PUI measurements * GCR measurements & ENAs in the Heliotail * Measurements of interstellar ions that penetrate the Heliosphere * A possible Interstellar Probe Component in the Heliotail