Keyword: milky

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  • Earth's Milky Way Neighborhood Gets More Respect

    06/04/2013 8:28:19 AM PDT · by LibWhacker · 10 replies
    NRAO ^ | 6/3/13
    Earth's Milky Way Neighborhood Gets More Respect Old picture: Local Arm a small "spur" of Milky Way. New picture: Local Arm probable major branch of Perseus Arm. CREDIT: Robert Hurt, IPAC; Bill Saxton, NRAO/AUI/NSF. Our Solar System's Milky Way neighborhood just went upscale. We reside between two major spiral arms of our home galaxy, in a structure called the Local Arm. New research using the ultra-sharp radio vision of the National Science Foundation's Very Long Baseline Array (VLBA) indicates that the Local Arm, previously thought to be only a small spur, instead is much more like the adjacent major arms,...
  • Galaxy Grande: Milky Way May Be More Massive Than Thought

    12/03/2012 10:02:45 AM PST · by LibWhacker · 22 replies
    Scientific American ^ | 12/3/12 | Ken Croswell
    Hubble observations of a speedy galaxy weigh on the Milky Way and indicate that our galaxy is at least a trillion times as massive as the sunMilky Way GREAT GALAXY: The Milky Way maintains a fleet of some two dozen satellite galaxies whose motions help reveal its mass. Image: NASA/ESA/Hubble Heritage Team Although scientists know the masses of the sun and Earth, it's a different story for the galaxy. Mass estimates range widely: At the low end, some studies find that the galaxy is several hundred billion times as massive as the sun whereas the largest values exceed two trillion...
  • Milky Way's black hole seen in new detail

    09/18/2008 2:02:34 PM PDT · by LibWhacker · 20 replies · 7,755+ views
    ScienceNews ^ | 9/27/08 | Ron Cowen
    New radio wave observations are giving astronomers their closest look yet at the supermassive black hole believed to be lurking at the center of our galaxy. Reporting in the Sept. 4 Nature, a team has, for the first time, resolved features as small as the black hole’s event horizon — the gravitationally warped region from which nothing, not even light, can escape. “We have now entered a new era, one in which we can directly image structure at the event horizon of a black hole,” asserts Christopher Reynolds of the University of Maryland in College Park in a commentary accompanying...
  • New Milky Way Map Created; Shows Fewer Main Arms (MW one of the rare beautiful bispiral galaxies)

    06/03/2008 8:14:07 PM PDT · by LibWhacker · 28 replies · 138+ views
    National Geographic News ^ | 6/3/08 | John Roach
    Astronomers unveiled today what they are calling the best map ever produced of the Milky Way galaxy. The new view shows our spiral galaxy as it would look face-on to a very distant observer. The map is based on findings about the structural evolution of the Milky Way presented this week at the 212th meeting of the American Astronomical Society in St. Louis, Missouri. Robert Benjamin of the University of Wisconsin-Whitewater was among the scientists who presented results at a briefing today with reporters. The researchers determined that the Milky Way actually has two fewer major arms than previously believed....
  • Spiral Arm Of Milky Way Looms Closer Than Thought

    12/08/2005 3:16:16 PM PST · by blam · 74 replies · 1,421+ views
    New Scientist ^ | 12-8-2005 | Maggie McGee
    Spiral arm of Milky Way looms closer than thought 19:00 08 December 2005 NewScientist.com news service Maggie McKee The Milky Way is made of four main arms curving around its centre – astronomers measured the distance from Earth to a star-forming region called W3OH inside the Perseus arm (Image: Y. Xu et al/Science) One of the Milky Way's star-studded spiral arms lies twice as close to Earth as some previous estimates suggested. New research has produced the most accurate distance measurement ever made of the arm, which could help astronomers understand how our galaxy's spiral structure formed. The Milky Way...
  • Bar at Milky Way's heart revealed

    08/16/2005 7:04:45 PM PDT · by LibWhacker · 168 replies · 2,878+ views
    New Scientist ^ | 8/16/05 | Maggie McKee
    The Milky Way is not a perfect spiral galaxy but instead sports a long bar through its centre, according to new infrared observations from NASA's Spitzer Space Telescope. Galaxies come in a wide variety of shapes usually thought to be produced by gravitational interactions with nearby objects. Some spiral galaxies look like pinwheels, with their arms curving out from a central bulge, while others have a straight bar at their centres. Radio telescopes detected gas that hinted at a bar at the heart of the Milky Way in the late 1980s. A decade later, observations with the near infrared survey...
  • Milky Way 'arm' found (50-year-old map of the Milky Way will have to be redrawn)

    05/07/2004 6:25:34 AM PDT · by dead · 73 replies · 634+ views
    A 50-year-old map of the Milky Way will have to be redrawn after Australian astronomers made the astonishing discovery that our spiral galaxy has a huge, outflung arm, New Scientist reports. The vast gassy limb comprises an arc of hydrogen 77,000 light years long and several thousand light years thick, running along the Milky Way's outermost edge and sweeping around the four main arms that swirl out from the galaxy's core. As it is not in the visible part of the light spectrum, it cannot be seen by telescope. Astronomers at the Australia National Telescope Facility in the Sydney suburb...
  • Deeply embedded stellar clusters found in Milky Way

    08/03/2003 5:43:34 PM PDT · by LibWhacker · 1 replies · 213+ views
    Peering into a giant molecular cloud in the Milky Way galaxy - known as W49 - astronomers from the European Southern Observatory (ESO) have discovered a whole new population of very massive newborn stars. This research was presented at the International Astronomical Union's 25th General Assembly held in Sydney, Australia, by ESO-scientist Joao Alves. With the help of infrared images obtained during a period of excellent observing conditions with the ESO 3.5-m New Technology Telescope (NTT) at the La Silla Observatory (Chile), the astronomers looked deep into this molecular cloud and discovered four massive stellar clusters, with hot and energetic...
  • Milky Way's Star 'Doughnut'

    01/06/2003 4:01:02 PM PST · by blam · 10 replies · 510+ views
    BBC ^ | 1-6-2003
    Monday, 6 January, 2003, 17:58 GMTMilky Way's star 'doughnut' A ring of stars surrounds the Milky Way A vast, but previously unknown structure has been discovered around the edges of our galaxy, the Milky Way. The first large area surveys of the sky have revealed several hundred million stars surrounding the galaxy's main disc. The ring, which has the appearance of a giant doughnut, could be the remains of a satellite galaxy. Astronomers believe it could hold clues as to how the Milky Way and other galaxies evolved. Giant doughnutAn international team of astronomers looked at images of the Milky...