<ul><li>NASA’s Parker Solar Probe is set to make a record-setting approach to the sun on December 24.</li><li>The spacecraft will come within just 3.8 million miles of the solar surface, the closest any probe has ever been to the sun.</li><li>This milestone will mark the completion of the Parker Solar Probe’s 22nd orbit around the sun.</li><li>The probe, launched in 2018, will complete a total of 24 orbits and gather data from uncharted territory.</li></ul>

NASA's Parker Solar Probe will fly closer to the sun than ever on Christmas Eve

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