Heartbeat of a Black Hole

This video is based on recent findings made by astronomers using the Chandra X-Ray Observatory and the Rossi X-Ray Timing Explorer of a pulsing “heartbeat” coming from the binary star-black [...]

Hubble Black Hole Probe

From HubbleCast. For centuries, scientists imagined objects so heavy and dense that their gravity might be strong enough to pull anything in, including light. They would be, quite literally, a [...]

Supermassive Black Hole in the Milky Way Galaxy

From a distance, our galaxy would look like a flat spiral, some 100,000 light years across, with pockets of gas, clouds of dust, and about 400 billion stars rotating around [...]

The Largest Black Holes in the Universe

How big can they get? What’s the largest so far detected? Where does an 18 billion solar mass black hole hide? We’ve never seen them directly… yet we know they [...]

The Asteroid that Flattened Mars

Just about every two years, the planet Mars makes its closest approach to Earth… around 36 million miles. That’s when we pack our robotic emissaries off to the Red Planet, [...]