Before they become black holes, dying stars of a certain mass should form an entirely new class of stellar object called an electroweak star.
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Push on the electromagnetic fields in the quantum vacuum and you should get an equal and opposite force.
What do you get when the past crystallizes out of the future? According to a new model of the universe that combines relativity and quantum mechanics, the answer is: the present.
The Hubble Space Telescope may be on the verge of finding the first evidence that spacetime is quantised
The best of the rest from the Physics arXiv this week:
A new approach to nanoparticle detection can measure the number of particles, their mass, and even their size.
Astronomers have always assumed that Uranus must have been knocked onto its side by a collision. Now a new idea suggests that the planet's remarkable tilt could have another explanation.
By some estimates, ocean mixing caused by swimming creatures is comparable to the mixing by the wind and tides. Now a new model of ocean swimming is set to test this idea.
Forget exoplanets, the first habitable body to be discovered beyond our solar system could turn out to be an exomoon in a habitable zone.
The latest evidence suggests that fingerprints process vibrations in the skin to make them easier for nerves to pick up.