quasar

The object, called a microquasar, is the first discovered beyond the Milky Way.

The brightest object in the early universe is helping to shine light on conditions soon after the Big Bang.

Huge black holes in these galaxies spew out tremendous amounts of X-rays.

The find could help explain why bigger galaxies have bigger central black holes.

How much? 140 trillion times the amount of water in Earth's oceans.

A space telescope has spotted a strange, distant galaxy cluster whose heart is surprisingly cold.

The young universe spiked a fever 1.5 billion years after the Big Bang, warming up as huge black holes poured out massive amounts of energy, a new study suggests.