Where do protons and neutrons get their mass and spin? Surprisingly, we don't know. A new facility promises to peek inside these particles to find answers
After 10 years in operation, the largest particle accelerator in the world is undergoing major upgrades, and researchers are throwing their effort behind new future technologies
Differences between matter and antimatter could help explain why the cosmos mostly lacks the latter today, researchers say
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A proposed experiment to swap fundamental properties between photons carries profound implications for our understanding of reality itself
Physicists, philosophers debate whether research can ever solve certain mysteries of the universe—and the human mind
Scientists propose that the moon could have formed when a Mars-sized object slammed into an Earth covered in magma seas. Christopher Intagliata reports.
LIGO and Virgo observatories have spotted ripples from what could be the first-ever detection of this long-sought event
Scientific American 's chief features editor Seth Fletcher talks about his book Einstein's Shadow, an account of the long effort to image a black hole that recently came to fruition...
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Cosmologist Lee Smolin says that at certain key points, the scientific worldview is based on fallacious reasoning
Researchers are narrowing down their measurements of how long the subatomic particle survives on its own
At extreme pressures, potassium atoms can be both liquid and solid at the same time, a phase of matter known as "chain melt." Christopher Intagliata reports.
Light tuned to a specific frequency warms ice more than water—which could come in handy for defrosting delicate biological samples. Adam Levy reports.
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Astrophysicist Chad Hanna discusses how ripples in spacetime are revolutionizing our understanding of the cosmos
Detailed data on space-time ripples are set to pour in from LIGO and Virgo’s upgraded detectors
Physicists attempting to unify the theories of gravity and quantum mechanics have long thought practical experiments were out of reach, but new proposals offer a chance to test the quantum nature of gravity on a tabletop...
Stemming from the “F-theory” branch of string theory, each solution replicates key features of the standard model of particle physics