The Galactic Core in Infrared - Astronomy Picture of the Day - 2009 January 7
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Uploaded by AstronomyPicoftheDay on Jan 30, 2009
What's happening at the center of our Milky Way Galaxy? To help find out, the orbiting Hubble and Spitzer space telescopes have combined their efforts to survey the region in unprecedented detail in infrared light. Infrared light is particularly useful for probing the Milky Way's center because visible light is more greatly obscured by dust. The above image encompasses over 2,000 images from the Hubble Space Telescope's NICMOS taken last year. The image spans 300 by 115 light years with such high resolution that structures only 20 times the size of our own Solar System are discernable. Clouds of glowing gas and dark dust as well as three large star clusters are visible. Magnetic fields may be channeling plasma along the upper left near the Arches Cluster, while energetic stellar winds are carving pillars near the Quintuplet Cluster on the lower left. The massive Central Cluster of stars surrounding Sagittarius A* is visible on the lower right. Why several central, bright, massive stars appear to be unassociated with these star clusters is not yet understood.
Credit: Hubble: NASA, ESA, & D. Q. Wang (U. Mass, Amherst); Spitzer: NASA, JPL, & S. Stolovy (SSC/Caltech)
Source: http://apod.nasa.gov/apod/ap090107.html
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the darker the region, the less infrared radiation it is emitting. so those black regions are just regions where it is 'empty', empty of matter that emits IR Radiation that is. we use the infrared band of the electromagnetic spectrum to look at the core because IR radiation goes right through a lot of the dust/gas, allowing us to see it more clearly, however as you can see it is still somewhat obscured. dark spots could be nebulae that block IR radiation, emptiness, or a variety of other things
qwecjc 2 years ago
What are the black spots? Are they black holes or just space/dark matter?
Lushin187 3 years ago