Free Astronomy Magazine September-October 2019

45 SEPTEMBER-OCTOBER 2019 ASTRONAUTICS mass already present on board (tanks, food supplies, launch and return seats, etc.) and to set up an additional shelter in the aft bay of the spacecraft by the inner portion closest to the heat shield (of course, the aft bay will face the source of the radiation). This is the state-of-the-art, waiting for better solutions. The truth is that, against the most energetic forms of space radia- tion, such as galactic cosmic rays (GCRs), E arth is surrounded by a giant magnetic bubble called the magnetosphere, which is part of a dynamic, interconnected system that responds to solar, planetary, and interstellar conditions. [NASA]