hubble-finds-that-the-nearest-quasar-is-powered-by-a-double-black-holehttps://www.astronomy.com/tags/news/page/318/News | Page 318 of 714 | Astronomy.comBrowse all the latest astronomy and space news on planets, stars, galaxies, cosmology, observing events, space missions, and more.https://www.astronomy.com/uploads/2021/09/Mrk231.jpgInStockUSD1.001.00exotic-objectsrobotic-spaceflightarticleASY2023-05-182015-08-2837987