systems
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Science
Fossil discovery sheds light on the early evolution of animal nervous systems
An incomplete tubular specimen of the Eopliaprites sphinx excavated from the Quang Tuanh Formation of the Early Cambrian. The ventral nerve cord is shown. Credit: Science Advances (2025). DOI: 10.1126/sciadv.adr0896 An international team of scientists has solved a fascinating piece of the evolutionary puzzle. That’s how the ventral nerve cord, a key component of the central nervous system, evolved in…
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Physics
Compact all-fiber photoacoustic spectrometer for intravascular gas detection comparable to laboratory-based systems
Fiber photoacoustic spectrometer allows continuous intravascular gas monitoring. Credit: Jun Ma (Jinan University) Compact spectroscopic systems capable of detecting trace concentrations at parts per billion (ppb) levels are of paramount importance in applications ranging from environmental monitoring and industrial process control to biomedical diagnostics. However, existing benchtop spectroscopy systems are too large, complex, and impractical for use in confined spaces.…
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Other Sciences
Opinion: Peer review systems no longer guarantee academic rigor and a different approach is needed
Credit: Pixabay/CC0 Public Domain Peer review is a central function of academic research. This is the process by which research is finally published in an academic journal. Independent experts review the work of other researchers and recommend whether and how the work should be accepted by publishers and improved. Peer reviews are often thought to guarantee quality, but in reality…
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Physics
Metalens uses AI to enable high-resolution, full-color imaging of compact optical systems
A metalens, consisting of an array of nanostructures with arbitrary rotation angles, captures the image, which is then reconstructed to produce an output image that closely approximates the quality of the original “ground truth” image. Credit: Advanced Photonics (2024). DOI: 10.1117/1.AP.6.6.066002 Modern imaging systems, such as those used in smartphones, virtual reality (VR), and augmented reality (AR) devices, are constantly…
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Space & Cosmos
How many more exoplanets are there in known systems?
Consider seven planetary systems. Credit: arXiv (2024). DOI: 10.48550/arxiv.2411.00245 One thing we’ve learned in recent decades is that exoplanets are surprisingly common. So far we have confirmed about 6,000 planets, and there is evidence for thousands more. Most of these planets were discovered using the transit method. Although there are other methods. Many stars are known to have multiple planets,…
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Space & Cosmos
Investigating the statistical possibility of triple star systems containing exoplanets
An example of a triple star system. Credit: Caltech/R. Hart (Infrared Processing Analysis Center, or IPAC) Why is it important to look for exoplanets in triple star systems? And how many planets can we find there? That’s what a recent study accepted in Astrophysics & Space Science seeks to address, after investigating the statistical possibility of a triple star system…
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Physics
The research team is investigating the emergence of fluctuating hydrodynamics in chaotic quantum systems.
Fluorescence images of a quantum many-body system of cesium atoms in an optical lattice, with an initially ordered configuration (left) and a random configuration that evolves over time. By studying the growth of fluctuations in this system, we find indications that quantum many-body systems can be macroscopically described by a simple classical theory called fluctuational hydrodynamics (FHD). Courtesy of Julian…
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