Astronomers have detected a black hole, the most massive yet measured, in the Cosmic Horseshoe galaxy. https://t.co/J7tRvtBvuQ https://t.co/YisdAk7t8j ...

Astronomers have detected a black hole, the most massive yet measured, in the Cosmic Horseshoe galaxy. https://t.co/jecNvkLdzb https://t.co/YsAY8Uq0lo ...