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Há 6 dias · 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 zero volume and infinite density called the singularity.
- The Editors of Encyclopaedia Britannica
- A black hole is a cosmic body of extremely intense gravity from which even light cannot escape. Black holes usually cannot be observed directly, bu...
- The singularity constitutes the center of a black hole, hidden by the object’s “surface,” the event horizon. Inside the event horizon, the escape v...
- A black hole can be formed by the death of a massive star. At the end of a massive star's life, the core becomes unstable and collapses in upon its...
- One example of a black hole is can be found in Cygnus X-1, a binary X-ray system consisting of a blue supergiant and an invisible companion 14.8 ti...
Há 1 dia · A black hole is a region of spacetime where gravity is so strong that nothing, not even light and other electromagnetic waves, is capable of possessing enough energy to escape it. Einstein's theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.
18 de jun. de 2024 · Massive black holes — with masses over one hundred thousand times that of our Sun — exist at the centre of most galaxies, including the Milky Way. “ These giant monsters usually are sleeping and not directly visible ,” explains co-author Claudio Ricci, from the Diego Portales University, also in Chile.
18 de jun. de 2024 · Over the past four years, astronomers have been able to watch the supermassive black hole in SDSS1335+0728’s center go from dim and quiet to bright and active, the first time such a transition...
19 de jun. de 2024 · Sudden brightness in a distant galaxy has caused astronomers to observe an unprecedented celestial sight: the awakening of a supermassive black hole.
18 de jun. de 2024 · In late 2019, the galaxy SDSS1335+0728 suddenly started shining brighter than ever before and was classified as having an active galactic nucleus, powered by a massive black hole in the galaxy's core. This is the first time the awakening of a massive black hole has been observed in real time.
18 de jun. de 2024 · In late 2019, the galaxy SDSS1335+0728 suddenly started shining brighter than ever before and was classified as having an active galactic nucleus, powered by a massive black hole in the...
