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    Cosmic mystery deepens as astronomers find object flashing in both radio waves and xuhuong rays

    May 30, 2025, Categories  Astronomy/Space

    Cosmic mystery deepens as astronomers find object flashing in both radio waves and X-rays
    An image of the sky showing the region around ASKAP J1832-0911. X-rays from NASA’s Chandra X-ray Observatory, radio data from the South African MeerKAT radio telescope, and infrared data from NASA’s Spitzer Space Telescope. Credit: Ziteng (Andy) Wang, ICRAR

    Astronomers from the International Center for Radio Astronomy Research (ICRAR), in collaboration with international teams, have made a startling discovery about a new type of cosmic phenomenon.

    The object, known as ASKAP J1832-0911, emits pulses of radio waves and X-rays for two minutes every 44 minutes.

    The paper, “Detection of X-ray Emission from a Bright Long-Period Radio Transient,” is published in Nature.

    This is the first time objects like these, called long-period transients (LPTs), have been detected in X-rays...

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    Ultrathin display technology shows dozens of images hidden in a single screen

    May 28, 2025, Categories  Physics

    Ultra-thin display technology shows dozens of images hidden in a single screen
    Schematic of a spin- and wavelength-multiplexed metahologram. This hologram encodes multiple holographic images using a single-cell metasurface, where distinct images appear on the same image plane based on the incident spin states and operating wavelengths. Credit: Advanced Science (2025). DOI: 10.1002/advs.202504634

    From smartphones and TVs to credit cards, technologies that manipulate light are deeply embedded in our daily lives, many of which are based on holography. However, conventional holographic technologies have faced limitations, particularly in displaying multiple images on a single screen and in maintaining high-resolution image quality.

    Recently, a research team led by Professor Junsuk Rho at POSTECH (Pohang University of Science and Technology) has developed a groun...

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    ‘Raindrops in the Sun’s corona’: New adaptive optics shows stunning details of our star’s atmosphere

    May 28, 2025, Categories  Astronomy/Space

    This image of a prominence above the solar surface is a snapshot of a 4-minute time-lapse movie that reveals its rapid, fine, and turbulent restructuring with unprecedented detail. The Sun’s fluffy-looking surface is covered by “spicules”, short-lived plasma jets, whose creation is still the subject of scientific debate. The streaks on the right of this image are coronal rain falling down onto the Sun’s surface. This image was taken by the Goode Solar Telescope at Big Bear Solar Observatory using the new coronal adaptive optics system Cona. The image shows the hydrogen-alpha light emitted by the solar plasma. The image is artificially colorized, yet based on the color of hydrogen-alpha light, and darker color is brighter light. Credit: Schmidt et al./NJIT/NSO/AURA/NSF

    Scientist...

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    Spleen-based islet transplantation restores glycemic control in type 1 diabetes without full immunosuppression

    May 26, 2025, Categories  Biology/Biotechnology, Health/Medical

    Spleen-based islet transplantation restores glycemic control without full immunosuppression
    Human islets grown in the immune-remodeled spleen of macaques. Credit: Lei Dong/Nanjing University and Jian Xiao/Wenzhou Medical University

    Wenzhou Medical University researchers have reimagined the spleen as a viable site for islet transplantation, enabling long-term diabetes control without the burden of full immunosuppression. Nanoparticle-driven spleen remodeling allowed transplanted mouse, rat, and human islets to restore normal blood sugar in diabetic rodents and cynomolgus macaques.

    In type 1 diabetes, the immune system destroys native beta cells, the insulin-producing cells housed within pancreatic clusters called islets of Langerhans...

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