Evidence of “negative time” observed in quantum experiments
Scientists just measured something that sounds impossible. When light passes through atoms, it can spend what appears to…
Why did Cosmic Noon galaxies emit so many cosmic rays?
The background image is the COSMOS field observed with the South African MeerKAT radio array. An artistic illustration…
X-ray flashes reveal how electron-hole pairs tug at atoms inside quantum dots
Johan Bielecki at the “Single Particles Biomolecules and Clusters/Serial Femtosecond Crystallography” (SPB/SFX) instrument of European XFEL, where the…
Physics – Skyrmions as Active Matter
August 18, 2025• Physics 18, 146 Pairs of skyrmions—tiny whirlpools that emerge in some magnetic materials—might be able…
Noncollinear harmonic spectroscopy reveals crossover of strong-field effects
Figure 1a illustrates the generation of ultrahigh order wave-mixing photons resulting from the superposition of an intense fundamental field…
2025 One Hertz Challenge: Timekeeping At One Becquerel
The Becquerel (Bq) is an SI unit of radioactivity: one becquerel is equivalent to one radioactive decay per…
Strange new shapes may rewrite the laws of physics
How can the behavior of elementary particles and the structure of the entire universe be described using the…
This Bright Dot May Be an Entirely New Type of Space Object
At first, the dot looked like any other star. Then the astrophysicists switched to polarized light and found…
These Chunks of Ice Move All By Themselves, Thanks to a Cool Engineering Trick
It looks like something straight out of a Ouija board horror movie, but frosty—researchers have figured out how…
Quasicrystals Spill Secrets of Their Formation
“That’s just freaking awesome. It’s a really clever thing,” Glotzer said. “Until now, no one has ever successfully…