science π‘οΈ Earth's magnetic field is your secret shield
Earthβs magnetic field currently deflects dangerous charged particles streaming from the Sun and beyond. This planetary defense system works alongside the atmosphere to protect people on the surface. While the magnetosphere is active, it is not a perfect block and changes with solar conditions. Astronauts going to Mars would face different, more chronic and episodic radiation problems. NASA estimates a plausible mission class to Mars could take nearly three years. π