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Keyword: cepheidvariables

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  • New model of the Milky Way shows our galaxy is warped

    08/05/2019 4:01:46 PM PDT · by BenLurkin · 61 replies
    NY Post ^ | August 5, 2019 | Mike Wehner, BGR
    The Milky Way is a spiral galaxy with curved arms stretching out into space. Most depictions of our galaxy show it as being rather flat, but data from the Optical Gravitational Lensing Experiment at the university suggests the opposite. The team, who describe our galaxy as being less a flat disc and more a “wobbly, uncooked pizza crust,” mapped the position of a specific type of star called Cepheids. Cepheids are pulsating stars and it’s easy for researchers to measure the distance between them and Earth. Using data from 2,431 Cepheids, the team was able to create its incredibly detailed...
  • The Milky Way is being warped and twisted, study says

    02/04/2019 2:03:07 PM PST · by EdnaMode · 39 replies
    CNN ^ | February 4, 2019 | Ashley Strickland
    Our home galaxy, the Milky Way, makes for a pretty space picture, and it looks normal at a distance. But a new 3D map reveals a surprise: The Milky Way is being warped and twisted by its stars. The Milky Way is a spiral galaxy, in which stars and gas clouds exist mainly in its two spiral "arms." Our massive neighbor, the Andromeda galaxy, is also a spiral. Spiral galaxies usually appear very flat and easy to see through a telescope, said the researchers behind the new map, published Monday in the journal Nature Astronomy. Using 1,339 large, pulsating stars...
  • Universe's Expansion Rate Is Different Depending on Where You Look

    07/17/2018 7:33:25 AM PDT · by ETL · 42 replies
    Space.com ^ | July 13, 2018 | Elizabeth Howell, Space.com Contributor
    Our universe's rate of expansion keeps getting stranger. New data continues to show a discrepancy in how fast the universe expands in nearby realms and more distant locations.  The study's researchers said this "tension" could mean we need to revise our understanding of the physics structuring the universe, which could include exotic elements such as dark matter and dark energy. New measurements from the Hubble Space Telescope and the Gaia space telescope together showed that the rate of expansion nearby is 45.6 miles per second per megaparsec. This means that for every 3.3 million light-years a galaxy is farther away from...