Black Hole

Artist’s illustration of a black hole. Gravitational microlensing turns up black hole candidate, one of 200 million in the galaxy. When massive stars come to the end of their lives and explode in a supernova, they leave behind a black hole. It is estimated that about one in a thousand…

Black holes, by their nature, are invisible unless part of a stellar binary or surrounded by an accretion disk. Most stellar-sized black holes aren't, but astronomers have been searching for them through gravitational microlensing events, where the black hole brightens and distorts light from stars toward the galactic center. A…

Does this black hole seem as if it's expanding toward you? You're not alone. Some 86 percent of participants in a new study had the same experience. "The 'expanding hole' is a highly dynamic illusion: The circular smear or shadow gradient of the central black hole evokes a marked impression…

A team of astronomers led by scientists at the Center for Astrophysics | Harvard & Smithsonian who produced the first direct image of a black hole three years ago have now produced a portrait of a second, this time a much-anticipated glimpse of the supermassive blck hole at the center…

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A few particles of light bouncing off a flying mirror made of charged particles may reveal whether or not black holes destroy information, a famous problem in physics Physics 3 June 2022 By Karmela Padavic-Callaghan Can a plasma mirror solve the black hole information paradox? Andrezej Wojcicki/Science Photo Library A…

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NASA’s Chandra X-ray Observatory and Neil Gehrels Swift Observatory have captured an image that shows huge rings around a black hole. It’s a composite that shows the ring-encircled black hole in X-rays, infrared and visible light. The black hole in the image is a binary system called V404 Cygni. It…

Home News This "expanding hole" illusion may trick your brain into thinking you are walking into a cave or tunnel. (Image credit: Frontiers in Human Neuroscience) (opens in new tab) A brand new optical illusion tricks the majority of people into thinking that a dark "black hole" region at the…

The framers of the Constitution made a giant leap of faith when they incorporated universal adult suffrage into the design of India’s founding document and enshrined it in Article 326. In 1947, India’s literacy rate was only 12 per cent. In other words, 88 per cent of India was illiterate.…