Cosmology

  1. illustration of alternate universes
    Astronomy

    Universes with no weak force might still have stars and life

    An alternate universe that lacks one of the four fundamental forces might still have galaxies, stars, planets and perhaps life, a new study suggests.

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  2. dark matter halo
    Particle Physics

    Clumps of dark matter could be lurking undetected in our galaxy

    Dark matter, assumed to form featureless blobs, might clump together into smaller objects.

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  3. Cosmology

    Readers wonder about the universe’s expansion and more

    Readers had questions about the universe's accelerating expansion, a hidden void in the Great Pyramid of Giza and what happens to human waste in space.

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  4. illustration of inner structure of a white dwarf
    Astronomy

    White dwarf’s inner makeup is mapped for the first time

    The first map of the internal composition of a white dwarf star shows these stellar corpses contain more oxygen than expected, challenging stellar evolution theories.

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  5. painting of stars
    Astronomy

    86 stars get official names

    The International Astronomical Union has released 86 newly official star names, based, in part, on historical star names from various indigenous cultures.

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  6. supermassive black hole
    Astronomy

    The most distant quasar ever spotted hails from the universe’s infancy

    The new record-holder for faraway quasars comes from a period of rapid change in the universe.

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  7. simulation of lumpy universe
    Cosmology

    Simulating the universe using Einstein’s theory of gravity may solve cosmic puzzles

    Better simulating the dense parts of the universe could improve scientists’ view of how the universe evolves.

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  8. colliding neutron stars
    Cosmology

    What detecting gravitational waves means for the expansion of the universe

    The latest LIGO signal proves that gravitational waves travel at the speed of light, ruling out a swath of cosmological theories in the process.

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  9. computer simulation of the universe
    Astronomy

    How to make the cosmic web give up the matter it’s hiding

    Half the ordinary matter in the universe is unaccounted for. Astronomers may now have a new way to see it spanning the space between galaxies.

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  10. map of dark matter
    Cosmology

    Map reveals the invisible universe of dark matter

    The Dark Energy Survey reports a new tally of the dark universe.

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  11. MACS J1149
    Astronomy

    The most distant star ever spotted is 9 billion light-years away

    A bright blue star sends its light from two-thirds of the way across the universe, thanks to a chance alignment with a galaxy cluster.

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  12. MACS J1149
    Astronomy

    Astronomers get glimpse of star 9 billion light-years away

    A bright blue star sends its light from two-thirds of the way across the universe, thanks to a chance alignment with a galaxy cluster.

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