Photons can collide as if they were massive objects thanks to metamaterials known as time interfaces that undergo abrupt changes in their optical properties.
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A walk-through PET system that looks like an airport security scanner could ramp patient throughput while reducing system costs.
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A trio of researchers in Japan has demonstrated the Mpemba effect theoretically in a simple quantum system composed of a quantum dot connected to two reservoirs acting as heat sinks.
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A hidden planet with a mass about 1.5–3 times that of Earth could be lurking at the edge of the solar system, according to computer simulations.
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The most distant galactic magnetic field ever observed has been reported by an international team of astronomers.
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A team of theoretical physicists in India has shown that gravitational waves could reveal the role that dark matter could play in transforming neutron stars into black holes.
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Alice rings created in the lab could provide insights into particle physics and cosmology.
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Players of contact sports run the risk of head injuries. A new digital headset could help determine when it's safe to return to play after a concussion.
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The Moon contains significantly less water ice than was previously thought, complicating plans to establish a long-term human presence on the lunar surface.
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A optical circuit has performed a quantum computation called Gaussian boson sampling 100 trillion times faster than a supercomputer could.
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A correlation between the masses of supermassive black holes (SMBHs) and the timings of fluctuations in the brightness of their accretion discs has been found by astronomers
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