thumb|A close-up of one of the loop brightenings. The frame on the far right is the most zoomed in, showing the putative nanoflare. thumb|"This false-color temperature map shows solar active region AR10923, observed close to center of the sun's disk. Blue regions indicate plasma near 10 million degrees K." Credit: Reale, et al. (2009), NASA.
thumb|A close-up of one of the loop brightenings. The frame on the far right is the most zoomed in, showing the putative nanoflare. thumb|"This false-color temperature map shows solar active region AR10923, observed close to center of the sun's disk. Blue regions indicate plasma near 10 million degrees K." Credit: Reale, et al. (2009), NASA.
A nanoflare is a very small episodic heating event which could be prolific in the corona, the external atmosphere of the Sun. These would blend together to give the appearance of continuous heating.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).