Cosmology

  1. 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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  2. 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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  3. 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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  4. 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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  5. 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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  6. 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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  7. 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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  8. 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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  9. 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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  10. 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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  11. illustration of LISA satellite
    Astronomy

    Satellite trio will hunt gravitational waves from space

    The European Space Agency has green-lighted the Laser Interferometer Space Antenna, expected to launch in 2034.

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  12. simulation of cosmic void
    Cosmology

    Milky Way’s loner status is upheld

    Galaxy surveys show the Milky Way lives in a vast cosmic void, which could help ease tensions between ways of measuring how fast the universe is expanding.

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