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Loading contentRadiation is one of the central hazards of human spaceflight. A large solar particle event can deliver a dangerous dose to astronauts, especially beyond the protection of Earth's magnetic field, and crews may need to shelter in more shielded parts of a spacecraft.
Facts on this topic will be cited from these primary and reference sources.
Space-weather forecasts and alerts: aurora (OVATION), the Kp index, and the G1–G5 geomagnetic storm scale.