In the next decade, NASA aims to launch humankind toward the Moon and on to Mars — a monumental step in crewed space travel. Such a journey is filled with challenges and perils, not unlike those faced by early explorers. However, instead of stormy seas, these crews will set sail amid the hazards of the heliosphere — the magnetic environment emanating out from the Sun and encompassing the solar system. To safely navigate the heliosphere, NASA scientists and missions have been mapping the region f