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miércoles, 27 de julio de 2016

NASA : Hubble Views a Galaxy Fit to Burst .- Telescopio Espacial Hubble, observa una gaaxia a punto de estallar

http://www.nasa.gov/image-feature/goddard/2016/hubble-views-a-galaxy-fit-to-burst

Vibrant core of galaxy NGC 3125
This NASA/ESA Hubble Space Telescope image reveals the vibrant core of the galaxy NGC 3125. Discovered by John Herschel in 1835, NGC 3125 is a great example of a starburst galaxy — a galaxy in which unusually high numbers of new stars are forming, springing to life within intensely hot clouds of gas.

Located approximately 50 million light-years away in the constellation of Antlia (The Air Pump), NGC 3125 is similar to, but unfathomably brighter and more energetic than, one of the Magellanic Clouds. Spanning 15,000 light-years, the galaxy displays massive and violent bursts of star formation, as shown by the hot, young, and blue stars scattered throughout the galaxy’s rose-tinted core. Some of these clumps of stars are notable — one of the most extreme Wolf–Rayet star clusters in the local Universe, NGC 3125-A1, resides within NGC 3125.

Despite their appearance, the fuzzy white blobs dotted around the edge of this galaxy are not stars, but globular clusters. Found within a galaxy’s halo, globular clusters are ancient collections of hundreds of thousands of stars. They orbit around galactic centers like satellites — the Milky Way, for example, hosts over 150 of them.

Image credit: ESA/Hubble & NASA, Acknowledgement: Judy Schmidt
Text credit: European Space Agency
Last Updated: July 25, 2016
Editor: Ashley Morrow
NASA
Guillermo Gonzalo Sánchez Achutegui
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