Ceramic floor tile has a rich legacy as a durable flooring material. It’s used in countless public buildings. Hotel lobbies, commercial buildings and even churches sport this artificial stone ...

The galaxy’s core, quiescent for more than two decades, suddenly brightened by orders of magnitude. At the center sits a black hole about one million times the Sun’s mass, and researchers realized ...

The Milky Way has millions of small black holes and one giant supermassive black hole at its center. But does the galaxy have any medium-sized black holes? New research suggests the answer is yes ...

The moment one galaxy spears another with a powerful beam of radiation shooting from its central black hole has been spotted in a distant galactic collision. It's the first time we've seen this kind ...