Black hole - Wikipedia
A black hole is a region of spacetime where gravity is so strong that nothing, not even light, can escape it. Learn about the history of the concept, the predictions of general relativity, the formation and evolution of black holes, and the observational evidence and alternatives.
What Are Black Holes? - NASA
2020年9月8日 · A black hole is an object with a gravitational pull so strong that nothing can escape it. Learn about the two main classes of black holes: stellar-mass and supermassive, and how they form and behave.
Black hole | Definition, Formation, Types, Pictures, & Facts
4 天之前 · A black hole is a cosmic body of extremely intense gravity from which nothing, not even light, can escape. It is formed by the death of a massive star that collapses to a point of zero volume and infinite density called the singularity.
Black holes: Everything you need to know | Space
2022年5月6日 · Learn about the formation, discovery, types and facts of black holes, the mysterious objects that have such strong gravity that nothing can escape them. Find out how many black holes are in the...
Black Holes - NASA Science
Learn what black holes are, how they are detected, and what they are not. Find out how NASA explores and studies these mysterious cosmic objects with telescopes, gravitational waves, and more.
10 Questions You Might Have About Black Holes - NASA Science
2019年9月23日 · Learn about the formation, mass, and effects of black holes, the mysterious objects that trap light and warp space-time. Find out why black holes are dark and invisible, and how scientists study them from afar.
Black Holes | Center for Astrophysics | Harvard & Smithsonian
Learn about the types, properties and formation of black holes, some of the most fascinating and mind-bending objects in the cosmos. Find out how astronomers observe and study black holes using telescopes, supercomputers and theoretical models.
What Is a Black Hole? - National Geographic
Learn about the four types of black holes, how they form, and how astronomers detect them. Find out how black holes create deep gravity sinks, spaghettify matter, and emit radiation.
What are black holes? Everything you need to know about the …
2021年4月8日 · Black holes are regions of space where the gravitational pull is so strong that nothing — not even light — can escape. Rather than empty space, black holes are chock full of matter that gets...
Black holes, explained by an astrophysicist - Astronomy Magazine
2023年12月11日 · Learn about the discovery, formation, and properties of black holes, the regions of space where gravity is so strong that nothing can escape. Find out how big black holes can be, what's...