Most shark fossils are just teeth—their cartilage skeletons usually decay long before they can fossilize. But in northwestern Arkansas, a series of geological sites known as the Fayetteville Shale has preserved dozens of ...
Paleontology & Fossils
Feb 9, 2026
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225
In medicine, security, nuclear safety and scientific research, X-rays are essential tools for seeing what remains hidden. The materials used to create X-ray detectors can be rigid, expensive and laborious to produce. But ...
Materials Science
Feb 7, 2026
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19
Watching proteins move as they drive the chemical reactions that sustain life is one of the grand challenges of modern biology. In recent years, X-ray free-electron lasers, or XFELs, have begun to meet that challenge, capturing ...
Biotechnology
Feb 5, 2026
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14
An analysis of an unusual enzyme could result in a new generation of antimicrobial medicines to counter antibiotic resistance. Key details in the enzyme-driven biosynthesis of a natural molecule with potent antibiotic activity ...
Biochemistry
Feb 2, 2026
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9
A team of engineers and scientists has shown for the first time that a hard-X-ray cavity can provide net X-ray gain, with X-ray pulses being circulated between crystal mirrors and amplified in the process, much like happens ...
Optics & Photonics
Jan 28, 2026
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34
For many decades, the method to obtain atomic-level descriptions of chemical compounds and materials—be it a drug, a catalyst, or a commodity chemical—has been X-ray crystallography. This method has a known weakness: ...
Analytical Chemistry
Jan 28, 2026
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8
Scientists analyzing 443-million-year-old Scottish fossils have uncovered the early evidence that some of the first groups of vertebrates possessed surprisingly advanced eyes and traces of bone, reshaping our understanding ...
Molecular & Computational biology
Jan 28, 2026
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66
Like a recording artist who has had a long career, NASA's Chandra X-ray Observatory has a "back catalog" of cosmic recordings that is impossible to replicate. To access these X-ray tracks, or observations, the ultimate compendium ...
Astronomy
Jan 25, 2026
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47
Scientists at the X-ray free-electron laser SwissFEL have realized a long-pursued experimental goal in physics: to show how electrons dance together. The technique, known as X-ray four-wave mixing, opens a new way to see ...
Optics & Photonics
Jan 16, 2026
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131
The X-Ray Imaging and Spectroscopy Mission (XRISM), a joint mission between the Japanese Aerospace Exploration Agency (JAXA) and NASA, launched on Sept. 7th, 2023. Its advanced imaging filters and spectrometers were designed ...
Astronomy
Jan 10, 2026
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