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domingo, 15 de mayo de 2016

NASA : Hubble Spies a Spiral Snowflake .- Telescopio Espacial Hubbe, espía lo que parece un copo de nieve; que es la Galaxia Espiral NGC 6814

Hola amigos: A VUELO DE UN QUINDE EL BLOG., la Agencia Espacial NASA, nos informa que el Telescopio Espacial Hubble, ha captado el núcleo de una gigantesca Galaxia Espiral, conocida como : "NGC 6814 tiene un núcleo extremadamente brillante, un signo revelador de que la galaxia es una galaxia Seyfert. Estas galaxias tienen centros muy activos que pueden emitir fuertes explosiones de radiación. El luminoso corazón de NGC 6814 es una fuente altamente variable de la radiación de rayos X, provocando que los científicos sospechan que alberga un agujero negro supermasivo con una masa de unos 18 millones de veces la del sol...."
More information....

Spiral galaxy NGC 6814 with luminous arms and dark dust
Together with irregular galaxies, spiral galaxies make up approximately 60 percent of the galaxies in the local universe. However, despite their prevalence, each spiral galaxy is unique — like snowflakes, no two are alike. This is demonstrated by the striking face-on spiral galaxy NGC 6814, whose luminous nucleus and spectacular sweeping arms, rippled with an intricate pattern of dark dust, are captured in this NASA/ESA Hubble Space Telescope image.
 
NGC 6814 has an extremely bright nucleus, a telltale sign that the galaxy is a Seyfert galaxy. These galaxies have very active centers that can emit strong bursts of radiation. The luminous heart of NGC 6814 is a highly variable source of X-ray radiation, causing scientists to suspect that it hosts a supermassive black hole with a mass about 18 million times that of the sun.
 
As NGC 6814 is a very active galaxy, many regions of ionized gas are studded along its spiral arms. In these large clouds of gas, a burst of star formation has recently taken place, forging the brilliant blue stars that are visible scattered throughout the galaxy.
 
Image credit: ESA/Hubble & NASA; Acknowledgement: Judy Schmidt
Text credit: European Space Agency
Last Updated: May 13, 2016
Editor: Ashley Morrow
NASA
Guillermo Gonzalo Sánchez Achutegui
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