One significant discovery made by the Parker Solar Probe is the identification of jetlets – short-lived jets of plasma that pass energy and material into the upper corona, which escape across the solar system as the solar wind. These observations offer new insights into the mystery of how solar wind accelerates from subsonic speeds near the Sun’s surface to supersonic speeds far away from the Sun, as well as the long-standing puzzle of why the corona is significantly hotter than the Sun’s surface, known as the coronal heating problem.
Unraveling the Sun’s Secrets: NASA’s Groundbreaking Parker Solar Probe Mission
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