NASA’s PUNCH Spies Comet LemmonIn late 2025, as comet Lemmon (C/2025 A6) swept past the Sun and brightened in Earth’s night skies, NASA’s Earth-orbiting PUNCH (Polarimeter to Unify the Corona and Heliosphere) mission was watching the comet blaze through its field of view, providing a natural tracer of the Sun’s effects across the inner solar system. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video This movie, made from images taken by NASA’s PUNCH mission, shows comet Lemmon from Oct. 22 to Nov. 12, 2025. NASA/Southwest Research InstituteDiscovered in January 2025 using a NASA-funded survey telescope on Mount Lemmon in Arizona, comet Lemmon first appeared in PUNCH’s view in October. Comet Lemmon continues to be visible in PUNCH images, though it is now getting fainter with each passing day. Southwest Research Institute, based in San Antonio, leads the PUNCH mission and operates the mission’s four spacecraft from its facilities in Boulder, Colorado.

Source: Punch December 20, 2025 06:02 UTC