What NASA’s Orion revealed about radiation exposure for astronauts

The danger posed by radiation is a major concern that must be addressed if astronauts are to carry out long-term missions beyond Earth’s orbit.

With the help of mannequins named Helga and Zohar and sensors placed inside a spacecraft, scientists have collected valuable data about radiation exposure for astronauts outside Earth’s sheltering magnetic field and gained insights on how to better protect them in long space journeys like one to Mars.