angular motion of a star about its axis
~16 min read
This illustration shows the oblate appearance of the star Achernar caused by rapid rotation.
Stellar rotation is the angular motion of a star about its axis. The rate of rotation can be measured from the spectrum of the star, or by timing the movements of active features on the surface.
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).