Black hole - Wikipedia
A black hole is a region of spacetime wherein gravity is so strong that no matter or electromagnetic energy (e.g. light) can escape it. [2] Albert Einstein's theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole. [3] [4] The boundary of no escape is called the event horizon.
What Are Black Holes? - NASA
Sep 8, 2020 · A black hole is an astronomical object with a gravitational pull so strong that nothing, not even light, can escape it. A black hole’s “surface,” called its event horizon, defines the boundary where the velocity needed to escape exceeds the speed of …
Black hole | Definition, Formation, Types, Pictures, & Facts
5 days ago · Black hole, cosmic body of extremely intense gravity from which nothing, not even light, can escape. It can be formed by the death of a massive star wherein its core gravitationally collapses inward upon itself, compressing to a point of …
How Many Black Holes Are Hiding? NASA Study Homes in on …
Jan 13, 2025 · Although black holes are inherently dark — not even light can escape their gravity — they can also be some of the brightest objects in the universe: When gas gets pulled into orbit around a supermassive black hole, like water circling a drain, the extreme gravity creates such intense friction and heat that the gas reaches hundreds of ...
Black holes: Everything you need to know | Space
May 6, 2022 · Black holes are real, they're some of the strangest objects in space. Discover what black holes are and how they form with our informative black hole guide.
X-ray flashes from a nearby supermassive black hole accelerate ...
Jan 13, 2025 · The black hole in question is 1ES 1927+654, which is about as massive as a million suns and sits in a galaxy that is 270 million light-years away. In 2018, astronomers at MIT and elsewhere observed that the black hole’s corona — a cloud of whirling, white-hot plasma — suddenly disappeared, before reassembling months later. The brief ...
Black Holes 101 | National Geographic - YouTube
Learn about the types of black holes, how they form, and how scientists discovered these invisible, yet extraordinary objects in our universe....more. At the center of our galaxy, a...
What Is a Black Hole? - National Geographic
Black holes are points in space that are so dense they create deep gravity sinks. Beyond a certain region, not even light can escape the powerful tug of a black hole's gravity.
Black holes, explained by an astrophysicist - Astronomy Magazine
Dec 11, 2023 · While we know a lot about black holes, they still remain as one of the greatest mysteries in the universe. So let’s dive in — not literally – to answer all your burning questions about these...
Introduction to Black Holes - NASA
Apr 25, 2023 · Black holes are objects so dense that not even light can escape their gravity.