Black holes may appear to be shaped like a doughnut, but the truth is more complicated than that, explain our readers ...

Despite being “black” and a “hole”, a black hole is not a dark, empty space. In his theory of relativity, Einstein predicted how black holes are formed. When a massive star dies, it leaves a smaller, ...

Black holes are among the most fascinating and enigmatic objects in the universe. Born from collapsed stars and governed by ...

Cosmologists have long treated black holes and the Big Bang as separate extremes of physics, one swallowing light, the other ...

The first black hole images stunned the world in 2019, with headlines announcing evidence of a glowing doughnut-shaped object from the center of galaxy Messier 87 (M87 —55 million light years from ...

Consider the situation where an object crosses a black hole’s point of no return, called the event horizon. According to general relativity, all outsiders will see is how the swallowed object ...

A supermassive black hole lurking at the center of M87, a supergiant galaxy 55 million light-years from Earth, is acting far more strangely than anticipated. Since 2017, astronomers from the Event ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. The Event Horizon Telescope (EHT) Collaboration created a ...

Astronomers have obtained the sharpest-ever X-ray spectrum of an iconic active galaxy, providing the most accurate, precise ...

Black holes are not cosmic vacuum cleaners, but they are among the universe’s most extreme objects - born from collapsing ...

Some things in cosmology may simply be unknowable. Why is there something rather than nothing? What lies outside the universe? What is inside a black hole? That last one has been niggling at ...