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    Category Astronomy/Space

    Saturn’s icy moon may host a stable ocean fit for life

    November 11, 2025, Categories  Astronomy/Space

    Enceladus heat transfer infographic
    A new study has constrained the Enceladus’ global conductive heat flow by studying its seasonal temperature variations at its north pole (yellow). These results, when combined with existing ones of its highly active south polar region (red) provide the first observational constraint of Enceladus’ energy loss budget (<54 GW) – which is consistent with the predicted energy input (50 to 55 GW) from tidal heating. This implies Enceladus’ current activity is sustainable in the long term – an important prerequisite for the evolution of life, which is thought possible to exist in its global sub-surface ocean. Image credit: University of Oxford/NASA/JPL-CalTech/Space Science Institute (PIA19656 and PIA11141)

    A new study led by researchers from Oxford University, Southwest Research I...

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    Black hole blast outshines 10 trillion Suns

    November 9, 2025, Categories  Astronomy/Space

    A distant supermassive black hole has set a new cosmic record, unleashing the brightest flare ever seen as it devoured a gigantic star that wandered too close. A colossal black hole 10 billion light-years away has been caught devouring one of the universe’s biggest stars, unleashing a flare 30 times brighter than any seen before. The flare, detected by Caltech’s ZTF, likely marks a tidal disruption event — when a star is shredded by a black hole’s gravity.

    The Universe’s most massive stars typically end their lives in spectacular explosions known as supernovae before collapsing into black holes. But one enormous star seems to have met a very different fate...

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    Universe’s expansion ‘is now slowing, not speeding up’: Evidence mounts that dark energy weakens over time

    November 7, 2025, Categories  Astronomy/Space

    Universe's expansion 'is now slowing, not speeding up'
    DESI is a state-of-the-art instrument which maps distant objects to study dark energy. Credit: Marilyn Sargent/Berkeley Lab

    The universe’s expansion may actually have started to slow rather than accelerating at an ever-increasing rate as previously thought, a new study suggests.

    “Remarkable” findings published today in Monthly Notices of the Royal Astronomical Society cast doubt on the long-standing theory that a mysterious force known as ‘dark energy’ is driving distant galaxies away increasingly faster.

    Instead, they show no evidence of an accelerating universe.

    If the results are confirmed, it could open an entirely new chapter in scientists’ quest to uncover the true nature of dark energy, resolve the ‘Hubble tension,’ and understand the past and future of the universe.

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    New evidence suggests Einstein’s cosmic constant may be wrong

    November 6, 2025, Categories  Astronomy/Space

    Dark energy may be evolving—hinting that the universe’s ultimate destiny could be far stranger than we ever imagined. Astronomers are rethinking one of cosmology’s biggest mysteries: dark energy. New findings show that evolving dark energy models, tied to ultra-light axion particles, may better fit the universe’s expansion history than Einstein’s constant model. The results suggest dark energy’s density could be slowly declining, altering the fate of the cosmos and fueling excitement that we may be witnessing the universe’s next great revelation.

    Dark energy, the mysterious force thought to drive the universe’s accelerating expansion, remains one of the deepest puzzles in modern physics...

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