エピソード

  • Failed Supernova? How a Massive Star Quietly Became a Black Hole

    Failed Supernova? How a Massive Star Quietly Became a Black Hole
    2026/02/17
    Astronomers have identified a rare case in the Andromeda Galaxy where a massive star appears to have collapsed directly into a black hole—without exploding as a supernova. After nearly two decades of observations, researchers saw the star fade as its core imploded, while its outer layers dispersed more slowly due to internal convection.

    A lingering infrared glow now marks the aftermath, offering strong evidence for models predicting “failed supernovae.” This discovery suggests that many stellar-mass black holes may form in silence, reshaping our understanding of how these cosmic objects are born.

    This episode includes AI-generated content.
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    33 分
  • Bennu Asteroid Samples Rewrite Origins of Prebiotic Life Molecules

    Bennu Asteroid Samples Rewrite Origins of Prebiotic Life Molecules
    2026/02/16
    New analysis of asteroid Bennu shows that amino acids can form in cold, icy, and radioactive environments, overturning the idea that warm water is essential. Isotopic evidence points to multiple chemical pathways and diverse solar origins for life’s basic molecules, reshaping theories about how prebiotic chemistry emerged in the early Solar System.

    This episode includes AI-generated content.
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    37 分
  • First Subsurface Lava Tube Discovered on Venus

    First Subsurface Lava Tube Discovered on Venus
    2026/02/15
    Scientists analyzing NASA’s Magellan radar data have confirmed the first known subsurface lava tube on Venus, hidden beneath the planet’s thick clouds. Located near Nyx Mons, this vast volcanic tunnel may stretch for tens of kilometers, revealing how Venus’s extreme conditions shape its geology.

    The discovery strengthens theories about Venusian volcanism and sets the stage for future missions like Envision and Veritas to explore the planet’s concealed interior.

    This episode includes AI-generated content.
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    30 分
  • Is There No Black Hole? New Dark Matter Theory at the Center of the Milky Way

    Is There No Black Hole? New Dark Matter Theory at the Center of the Milky Way
    2026/02/14
    A new study challenges the idea that a supermassive black hole sits at the center of the Milky Way. Instead, researchers propose a dense core of fermionic dark matter that could reproduce the same gravitational effects—explaining both the fast orbits of nearby stars and the galaxy’s large-scale rotation.

    The model may even account for the central shadow seen in iconic images of our galactic core. In this episode, we explore whether dark matter—not a black hole—could be the true engine shaping our galaxy.

    This episode includes AI-generated content.
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    42 分
  • James Webb Finds the Chemical Seeds of Life in a Distant Galaxy

    James Webb Finds the Chemical Seeds of Life in a Distant Galaxy
    2026/02/13
    Using the James Webb Space Telescope, astronomers have detected a rich mix of organic molecules inside the dusty core of a distant galaxy.

    The discovery includes rare hydrocarbons and the first-ever extragalactic sighting of the methyl radical, revealing these regions as powerful cosmic chemical factories.

    Driven by cosmic rays, complex carbon structures are broken into smaller molecules that may act as precursors to life, offering new insight into chemical evolution hidden deep in the universe.

    This episode includes AI-generated content.
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    31 分
  • Gas Giants Around White Dwarfs: How Planets Survive Stellar Death

    Gas Giants Around White Dwarfs: How Planets Survive Stellar Death
    2026/02/11
    This episode explores new research showing that while most planets are destroyed when stars become red giants, a small number of gas giants can survive.

    By staying in wide orbits or migrating toward a white dwarf, these rare worlds endure stellar death—explaining why Jupiter-like planets are so uncommon around dead stars.

    This episode includes AI-generated content.
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    34 分
  • Primordial Explosions: Solving the Dark Matter Neutrino Mystery

    Primordial Explosions: Solving the Dark Matter Neutrino Mystery
    2026/02/10
    This episode explores a bold proposal suggesting a record-breaking neutrino detected in 2023 may have come from the explosion of a primordial black hole.

    Formed in the early universe and emitting energy via Hawking radiation, these exotic objects could carry a hidden dark charge—offering clues to the nature of dark matter and new particles beyond known physics.
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    34 分
  • : AI Takes the Wheel: Autonomous Driving on Mars

    : AI Takes the Wheel: Autonomous Driving on Mars
    2026/02/09
    This episode explores how NASA’s Perseverance rover completed its first Mars drives guided by generative AI.

    Using vision-language models to analyze orbital images and terrain, the system planned safe routes without real-time human control—overcoming Earth–Mars communication delays.

    These tests mark a major step toward fully autonomous planetary exploration and future human missions.

    This episode includes AI-generated content.
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    28 分