TIL I learned about gravastars (aka a gravitational vacuum star), theoretical objects related to black holes. Both are massive & ...

Warner and his co-authors, Iosif Bena and Dimitrios Toulikas, both at the Institute of Theoretical Physics in France, and Anthony Houppe of the Swiss Federal Institute of Technology Zurich, described ...

Famed physicist Albert Einstein first theorized that an observer should see a ring of light surrounding the black hole, ...

The Event Horizon Telescope captured the first image of the Milky Way galaxy's supermassive black hole Sagittarius A* — our ...

Right at the event horizon is where things get very ... That's what many physicists believe is happening with the black hole singularity. The infinitely small point might not physically exist ...

Because black hole gravity is so strong, anything that takes place within the event horizon can’t ever be ... as you get close to a singularity, the strong gravity causes every point in space ...

Accelerating x-ray flashes could come from the core of a dead star teetering near the event horizon. In 2018 astronomers at MIT and elsewhere observed previously unseen behavior from a black hole ...

In 1969, Penrose suggested that energy could be extracted from black holes by lowering an object into the ergosphere (the region just outside of the event horizon) and allowing it to accelerate ...

Einstein even tried later in life to prove that the so-called “Schwarzschild singularity ... outside the event horizon, glowing brightly around a dark center. The black hole looked just ...