NASA's Parker Solar Probe completed its closest-ever approach to the Sun in December 2024, passing within 6.1 million kilometers of the solar surface at a speed of 690,000 km/h, the fastest human-made object in history. Data published throughout 2025 revealed new insights into solar wind acceleration mechanisms and the physics of the solar corona. The findings have practical implications for space weather prediction and the protection of satellites and power grids.

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