IMAP
The Interstellar Mapping and Acceleration Probe (IMAP) is a NASA mission designed to study how the solar wind interacts with the interstellar medium — the space between stars. It aims to help scientists understand how our heliosphere (the protective bubble formed by the Sun’s magnetic field and solar wind) works and how it shields the solar system from cosmic radiation.
Scientific Instruments IMAP carries 10 science instruments, including: IMAP-Lo and IMAP-Hi: Measure energetic neutral atoms (ENAs) from the heliosphere’s boundary. SWAPI (Solar Wind and Pickup Ion): Studies solar wind composition. MAG: Measures the magnetic field. SWE: Observes electrons in the solar wind. Together, these instruments give a 3D picture of how the solar wind and interstellar matter interact.
Why It Matters IMAP builds on discoveries from earlier missions like:
IBEX (Interstellar Boundary Explorer) Voyager 1 and 2, which crossed the heliosphere’s edge IMAP’s data will help answer fundamental questions about: How cosmic rays enter our solar system The Sun’s role in shaping our space environment The nature of the boundary between solar and interstellar space.