Astronomers have used a new method to weigh the ultramassive black hole. They hope this will help them better understand how ...

Astronomers have discovered what could be the largest black hole ever detected. With a mass of 36 billion times that of our Sun, its gravity is so powerful that it bends the light of an entire galaxy ...

The highest-resolution image ever taken toward Sgr A*, the supermassive black hole in the center of our Milky Way galaxy. The ...

Astronomers had long been aware of these so-called Herbig-Haro objects—brilliant flares of ionized gas, often near newborn ...