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Is light a particle or a wave?Does light behave more like a particle, or like a wave? Today we know the surprising answer. Here's why it took so long to get there.
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Longstanding physics mystery may soon be solved, thanks to Einstein and quantum computingThe nature of quantum entanglement remains an outstanding problem in physics. But Albert Einstein's theories, along with insights from quantum computing, could finally put the mystery to rest.
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Study finds black holes made from light are impossible — challenging Einstein's theory of relativityNew theoretical research finds that it's impossible to form a black hole with the energy of light particles alone, poking a hole in Einstein's theory of general relativity.
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'The early universe is nothing like we expected': James Webb telescope reveals 'new understanding' of how galaxies formed at cosmic dawnAstronomers using the James Webb Space Telescope have observed five extremely dense proto-globular clusters along a hair-thin arc of glittering stars. The discovery could help them understand how the earliest galaxies formed.
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'Physics itself disappears': How theoretical physicist Thomas Hertog helped Stephen Hawking produce his final, most radical theory of everythingThomas Hertog tells us how he collaborated with Stephen Hawking on his final theorem — a Darwinian revolution in physics that explains the origin of time.
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A new theory of quantum gravity could explain the biggest puzzle in cosmology, study suggestsA new theory of quantum gravity, which attempts to unite quantum physics with Einstein's relativity, could help solve the puzzle of the universe's expansion, a theoretical paper suggests.
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Black hole singularities defy physics. New research could finally do away with them.Black hole singularities defy the laws of physics. New research presents a bold solution to this puzzle: Black holes may actually be a theoretical type of star called a 'gravastar,' filled with universe-expanding dark energy.
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Scientists discover bizarre region around black holes that proves Einstein right yet againEinstein's general theory of relativity predicted that so-called 'plunging regions' around black holes would accelerate matter into them at the speed of light. Now, X-ray observations of a remote black hole have proved him right.
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Newfound 'glitch' in Einstein's relativity could rewrite the rules of the universe, study suggestsEinstein's theory of general relativity is our best description of the universe at large scales, but a new observation that reports a "glitch" in gravity around ancient structures could force it to be modified.
