Princeton's David McComas to Lead IMAP, Mission to the Heliosphere (image) Princeton University Share Print E-Mail Caption Princeton astrophysicist David McComas will be the principal investigator for the Interstellar Mapping and Acceleration Probe (IMAP), a mission launching in 2024 to investigate the heliosphere, the region where particles streaming out from the sun carve out a bubble in the interstellar medium. IMAP will orbit the sun at L1, a million miles sun-ward from Earth, where it will be outside the protective envelope of Earth's magnetic field (shown here in blue). Credit Courtesy of the IMAP team Usage Restrictions Editorial use only Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.