Our Contribution

Studying the Edge of the Heliosphere

NASA’s Interstellar Mapping and Acceleration Probe (IMAP) mission, which APL is building in partnership with Principal Investigator David McComas of Princeton University, will explore our solar neighborhood, called the heliosphere — decoding the messages in particles from the Sun and beyond our cosmic shield.

Visit Mission Site

The Mission

Princeton University professor David J. McComas leads the mission with an international team of 24 partner institutions. APL builds the spacecraft and one of IMAP’s 10 instruments, IMAP-Ultra. After launch, APL will operate the mission.

APL is performing flight hardware and software development, mission systems engineering, safety and mission assurance, and preparing for spacecraft integration and environmental testing, and mission and science operations post-launch.

Mission Facts


Principal Investigator
David McComas, Princeton University

Project Manager
John Scherrer, Johns Hopkins APL

Project Scientist
Matina Gkioulidou, Johns Hopkins APL

IMAP Spacecraft
An interactive, 3D rendering of the IMAP spacecraft. Click on the image and drag to see all angles of the spacecraft.


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Interstellar Medium
Graphic of Interstellar Medium

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