Mapping the Boundaries of Our Home in Space | NASA’s IMAP Mission FriendsofNASA.org: NASA’s new Interstellar Mapping and Acceleration Probe, or IMAP, will explore and map the very boundaries of our heliosphere—a huge bubble created by the Sun's wind that encapsulates our solar system—and study how that boundary interacts with the local galactic neighborhood beyond. As a modern-day celestial cartographer, IMAP will chart the vast range of particles in interplanetary space, helping to investigate