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STELLAR CHEMISTRY
Hubble Images Galactic Core in Unprecedented New Detail

Credit for Hubble image: NASA, ESA, and Q.D. Wang (University of Massachusetts, Amherst) Credit for Spitzer image: NASA, Jet Propulsion Laboratory, and S. Stolovy (Spitzer Science Center/Caltech). Desktops available here
by Staff Writers
 Baltimore MD (SPX) Jan 09, 2009
 This composite color infrared image of the center of our Milky Way galaxy reveals a new population of massive stars and new details in complex structures in the hot ionized gas swirling around the central 300 light-years.

This sweeping panorama is the sharpest infrared picture ever made of the Galactic core. It offers a nearby laboratory for how massive stars form and influence their environment in the often violent nuclear regions of other galaxies.

This view combines the sharp imaging of the Hubble Space Telescope's Near Infrared Camera and Multi-Object Spectrometer (NICMOS) with color imagery from a previous Spitzer Space Telescope survey done with its Infrared Astronomy Camera (IRAC).

The Galactic core is obscured in visible light by intervening dust clouds, but infrared light penetrates the dust. The spatial resolution of NICMOS corresponds to 0.025 light-years at the distance of the galactic core of 26,000 light-years.

Hubble reveals details in objects as small as 20 times the size of our own solar system.

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STELLAR CHEMISTRY
Milky Way bigger, denser than thought
 Long Beach CA (UPI) Jan 5, 2009
 The Milky Way galaxy is 15 percent larger and 50 percent denser than scientists previously thought, findings presented in California Monday found.






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