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    Zhurong Rover finds evidence of possible Flooding on Mars Billions of Years ago

    September 28, 2022, Categories  Astronomy/Space

    Zhurong rover finds evidence of possible flooding on Mars billions of years ago
    Region around the Zhurong rover landing site. a, Topographic map showing the landing site of Zhurong (red star), as well as the landing sites of the Phoenix, InSight, Curiosity, Perseverance and Viking-2 landers/rovers (orange squares). The purple solid and dashed lines show the locations of Martian palaeoshorelines of ref. 11, roughly delineating the depositional contact of the VBF in the northern plains. b, Simplified geological map near the Zhurong landing site with data from ref. 18. Scale bar, 200 km. c, Geomorphic map of the Zhurong landing area with data from ref. 22. Scale bar, 15 km. d, Traverse of the Zhurong rover from 25 May (Sol 11) to 6 September (Sol 113) 2021 on the basemap of a Tianwen-1 High Resolution Imaging Camera image (Sol 19, 2 June 2021)...
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    Artificial Intelligence Reduces a 100,000-equation Quantum Physics problem to only Four Equations

    September 28, 2022, Categories  Physics, Technology/Electronics

    A visualization of a mathematical apparatus used to capture the physics and behavior of electrons moving on a lattice. Each pixel represents a single interaction between two electrons. Until now, accurately capturing the system required around 100,000 equations — one for each pixel. Using machine learning, scientists reduced the problem to just four equations. That means a similar visualization for the compressed version would need just four pixels. Domenico Di Sante/Flatiron Institute

    Researchers trained a machine learning tool to capture the physics of electrons moving on a lattice using far fewer equations than would typically be required, all without sacrificing accuracy.

    Using artificial intelligence, physicists have compressed a daunting quantum problem that until now requir...

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    Synthetic Lava in Lab Aids Exoplanet Exploration

    September 28, 2022, Categories  Astronomy/Space

    Exoplanet illustration
    In this illustration, exoplanet CoRoT-7b, which is likely five times the mass of Earth, may well be full of lava landscapes and boiling oceans. European Southern Observatory / L. Calçada

    The exploration era for the new James Webb Space Telescope (JWST) is getting hot—volcanically hot.

    A multidisciplinary group of Cornell researchers has modeled and synthesized lava in the laboratory as the kinds of rock that may form on far-away exoplanets. They developed 16 types of surface compositions as a starter catalog for finding volcanic worlds that feature fiery landscapes and oceans of magma.

    Their research, “Volcanic Exoplanet Surfaces,” was published in the forthcoming November 2022 edition of Monthly Notices of the Royal Astronomical Society.

    “We have synthesized compositions t...

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    New study shows Transmission of Epigenetic Memory across Multiple Generations

    September 28, 2022, Categories  Health/Medical, Biology/Biotechnology

    embryo-chromosomes-410.jpg
    In a study of epigenetic inheritance, researchers created embryos of the worm C. elegans that inherited egg chromosomes properly packaged with the epigenetic mark H3K27me3 and sperm chromosomes lacking the mark. The one-cell embryo on the left inherited the pink chromosomes from the egg and the green chromosomes from the sperm, the colors showing the presence or absence of H3K27me3. The two-cell embryo on the right shows the egg and sperm chromosomes united in each nucleus. (Photo by Laura Gaydos)

    Without altering the genetic code in the DNA, epigenetic modifications can change how genes are expressed, affecting an organism’s health and development...

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