标签： 自旋

天文·每日一图

 由 

UGC 12591：已知自旋最快的星系

2020 February 19 UGC 12591: The Fastest Rotating Galaxy Known Image Credit: NASA, ESA, Hubble; Processing & Copyright: Leo Shatz Explanation: Why does this galaxy spin so fast? To start, even identifying which type of galaxy UGC 12591 is difficult — featured on the lower left, it has dark dust lanes like a spiral galaxy but a large diffuse bulge of...

天文·每日一图

 由 

超快速自旋的旋涡星系

2019 November 5 Spiral Galaxies Spinning Super-Fast Image Credit: Top row: NASA, ESA, Hubble, P. Ogle & J. DePasquale (STScI); Bottom row: SDSS, P. Ogle & J. DePasquale (STScI) Explanation: Why are these galaxies spinning so fast? If you estimated each spiral’s mass by how much light it emits, their fast rotations should break them apart. The...