Four-wave mixing A weak optical signal (red) from a spacecraft transmitter can be amplified noise-free when it encounters two pump waves (blue and green) in a receiver on Earth. (Courtesy: Chalmers ...

A supposedly stable belt of radiation 7000 km above the Earth’s surface may in fact be producing damaging bursts of ...

Located about 548 light-years away, in the constellation Orion, Betelgeuse is the 10 th brightest star in the night sky.

Martin Soltau believes that a recent NASA report questioning the economics of space-based solar power was wide of the mark ...

Interactions between these as-yet hypothetical particles and neutron stars' strong magnetic field would produce photons that ...

Different neutron states could explain why different experiments produce different figures for how long neutrons survive ...

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Hybrid model A new description of nuclei combines the quark–gluon model of particle physics with the proton–neutron ...

“We decided to look at the probability of a given string of letters being typed by a finite number of monkeys within a finite ...

Paliya explains why it is essential for researchers to know about prizes such as the IOP highly cited paper award ...

Adaptive radiotherapy – in which a patient’s treatment is regularly replanned throughout their course of therapy – can ...

These two accounts of time provided the perfect opportunity to display the relation of physics and philosophy. On the one ...