The bold question-askers at What If venture beyond the event horizon to speculate what could lie inside a black hole.

The Event Horizon Telescope project, the group that took the first-ever image of a black hole, has made another historic breakthrough, making the highest-ever resolution observations of space ...

White holes are theoretical cosmic regions that are opposite to black holes. ... a white hole's event horizon is a boundary of no admission — space-time's most exclusive club.

Researchers have observed strange goings-on around a supermassive black hole located nearly 300 million light years away.

Whatever the case, since black holes have an event horizon that prevents accessing the information sealed behind it, we’ll likely never be able to see into another universe through a white hole ...

Any object that falls past a black hole's point-of-no-return, called the event horizon, isn't coming back. That includes light. "This would be the closest thing we know of around any black hole." ...

Anything on the outside of a white hole would never be able to get inside it, because it would have to travel faster than the speed of light to cross inward through the event horizon. Get the ...

White Holes, like Rovelli's other works, is remarkably short — less than 200 pages. ... That's when a horizon forms around the black hole. This "event horizon" marks the point of no return.

White Holes, like Rovelli's other works, is remarkably short — less than 200 pages. ... That's when a horizon forms around the black hole. This "event horizon" marks the point of no return.

Teams of astronomers at Meyer's university and many other institutions have been keeping an eye on the black hole ever since. The vigilance paid off when, in April 2023, a team at the university ...

The Event Horizon Telescope (EHT) Collaboration has conducted test observations achieving the highest resolution ever obtained from the surface of the Earth, by detecting light from the centers of ...