エピソード

  • Superstorm Shrinks Earth's Plasmasphere by 80%

    Superstorm Shrinks Earth's Plasmasphere by 80%
    2025/11/29
    Nagoya University researchers used the Arase satellite to capture unprecedented data from the May 2024 Gannon superstorm—the strongest geomagnetic event in over 20 years. The storm compressed Earth's plasmasphere to just one-fifth its normal size, disrupting navigation and communication systems worldwide.

    Scientists documented the extreme compression and surprisingly slow four-day recovery, driven by a "negative storm" that reduced ionospheric particle flow. Published in Earth, Planets and Space, these findings could revolutionize space weather forecasting and better protect our technology infrastructure. The storm's intensity even triggered rare low-latitude auroras visible in unusual regions around the globe.
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    28 分
  • The i-process: The Missing Link in How Stars Create Heavy Elements

    The i-process: The Missing Link in How Stars Create Heavy Elements
    2025/11/27
    We thought we knew how the universe forged elements heavier than iron—until the data stopped adding up. In this episode, we sit down with experimental physicist Mathis Wiedeking from Berkeley Lab to discuss the i-process (intermediate neutron capture), a newly identified third mechanism of stellar nucleosynthesis.

    Discover why the traditional "slow" and "rapid" processes couldn't explain recent astronomical anomalies and how the i-process fills the gap. Wiedeking breaks down the complex nuclear physics experiments required to model these unstable reactions and explains why understanding the hearts of stars is crucial for advancing medical isotopes and nuclear technology here on Earth.
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    35 分
  • Deep Learning Simulates 100 Billion Milky Way Stars

    Deep Learning Simulates 100 Billion Milky Way Stars
    2025/11/25
    AI successfully simulated the entire Milky Way, modeling 100 billion stars for 10,000 years. Using deep learning, researchers cut computation time that previously required decades.

    This method allows simultaneous modeling of all scales (supernovae to galactic dynamics), promising breakthroughs in astrophysics and climate modeling.
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    28 分
  • Rewriting History: AI, Biosignatures, and the Hunt for Life on Mars

    Rewriting History: AI, Biosignatures, and the Hunt for Life on Mars
    2025/11/23
    New research led by the Carnegie Institution for Science uses AI to detect molecular fingerprints in rocks over 3.3 billion years old. By training computers to recognize degraded biomolecules, scientists have pushed back the emergence of photosynthesis by nearly a billion years.

    We discuss the methodology behind these "chemical whispers," the contribution of Michigan State University’s fossil samples, and why this innovation is a game-changer for identifying biosignatures on other celestial bodies.
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    31 分
  • Solar System Moving Faster Than Expected? New Study Challenges Standard Cosmology

    Solar System Moving Faster Than Expected? New Study Challenges Standard Cosmology
    2025/11/21
    A new study from Bielefeld University suggests our solar system is racing through the universe at over three times the speed predicted by the standard cosmological model. Using LOFAR radio galaxy data, researchers found a strong directional “headwind” in the sky—evidence of significant anisotropy.

    With results reaching five-sigma confidence, the findings raise a major question: Is the universe less uniform than we thought? This episode breaks down what the discovery means and why it may force scientists to rethink key assumptions about cosmology.
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    31 分
  • Space-Based AI: Google's Project Suncatcher Plans Data Centers in Orbit

    Space-Based AI: Google's Project Suncatcher Plans Data Centers in Orbit
    2025/11/19
    Google's Project Suncatcher proposes a radical solution to AI's energy crisis: data centers in space. By deploying solar-powered satellite clusters in low Earth orbit, the tech giant aims to tap into continuous solar energy while avoiding Earth's power grid constraints.

    We explore how this orbital constellation would use laser-based connections for high-speed data transfer, the challenges of radiation-hardened processors, and whether plummeting launch costs make space-based machine learning economically viable. Could the future of AI comp
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    32 分
  • Mars Colonization Blueprint From Pacific Island History

    Mars Colonization Blueprint From Pacific Island History
    2025/11/17
    What can Pacific island colonization teach us about settling Mars? Archaeologist Thomas Leppard's groundbreaking research in Acta Astronautica reveals eight crucial lessons from humanity's ancient migrations that could determine the success of space colonies.

    The study goes beyond engineering challenges to address critical factors: minimum viable populations (1,000+ people), resource distribution, maintaining cultural ties, and the physiological realities of living on Mars or Jupiter's moons.

    By analyzing how our ancestors successfully colonized remote islands, researchers have created a science-based roadmap for humanity's greatest adventure—becoming an interplanetary species. Learn why these historical insights matter more than technology alone for long-term extraterrestrial survival.
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    43 分
  • The Hidden Challenge of Exomoons in Red Dwarf Systems

    The Hidden Challenge of Exomoons in Red Dwarf Systems
    2025/11/15
    A new Phys.org report explores research showing that large exomoons rarely survive around planets orbiting red dwarf stars. Using advanced simulations, scientists found that strong tidal forces often tear these moons apart within a billion years.

    While a few may persist around early-type M-dwarfs, most are too unstable to last—highlighting the fragile nature of exomoons in these environments. Future missions like the Habitable Worlds Observatory could help confirm these predictions.
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    35 分