Issues
Readers’ Forum
Search and Discovery
A star’s demise is connected to a neutrino outburst
The most conclusive evidence to date demonstrates that high-energy neutrinos could be formed by tidal forces that rip apart a star near a supermassive black hole.
A triatomic molecule is laser cooled and trapped
Molecules that stretch, bend, and rotate offer many new avenues for ultracold physics experiments. But they’re also harder to control.
X-ray imaging shows how a 17th-century painting lost its color
When an arsenic sulfide pigment chemically degraded, it stripped the painting’s yellow rose of visible details.
Issues and Events
Clean hydrogen edges toward competitiveness
States and regions around the US are readying their bids to host centers for hydrogen production, distribution, and end uses.
College instructors adapt their teaching to prevent cheating
Pressures, isolation, and the temptation of easy online answers are changing why and how students cheat.
Articles
Physics … is for girls?
Contrary to modern stereotypes, the laws of the natural world used to be considered a fundamental part of young women’s education.
Metasurfaces for quantum technologies
Subwavelength planar structures can generate, reshape, and entangle photons in a compact and stable device.
Einstein would be doubly amazed
Quantum-correlated light embodies all the weirdness of quantum physics. Now it is being used to aid in the observation of another exotic phenomenon: gravitational waves.
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Obituaries
Eugene Newman Parker
William Frank Vinen
Quick Study
When fizzy water levitates
Carbonated droplets deposited on a superhydrophobic surface float on a self-generated cushion of gas.