PIX4637936
The galactic center seen by Spitzer Space Telescope - The galactic center region seen by Spitzer satellite. The area photographed extends over 890 light-years and over 640 light-years high. In visible light, this area is hidden by a large amount of interstellar dust. This picture in false colors shows the old and cold stars in blue, and the red regions the hot and massive stars. Dark and bright filamentous clouds are star-forming regions. The brightest area in the center of the image is the center of our galaxy which houses a supermassive black hole. This infrared image from Nasa's Spitzer Space Telescope shows hundreds of thousands of stars crowded into the swirling core of our spiral Milky Way galaxy. In visible-light pictures, this region cannot be seen at all because dust lying between Earth and the galactic center blocks our view. In this false-color picture, old and cool stars are blue, while dust features lit up by blazing hot, massive stars are shown in a reddish hue. Both bright and dark filamentary clouds can be seen, many of which harbor stellar nurseries. The plane of the Milky Way's flat disk is apparent as the main, horizontal band of clouds. The brightest white spot in the middle is the very center of the galaxy, which also marks the site of a supermassive black hole. The region pictured here is immense, with a horizontal span of 890 light-years and a vertical span of 640 light-years. Earth is located 26,000 light-years away, out in one of the Milky Way's spiral arms. Though most of the objects seen in this image are located at the galactic center, the features above and below the galactic plane tend to lie closer to Earth. This image is a mosaic of thousands of short exposures taken by Spitzer's Infrared Array Camera. The entire region was imaged in less than 16 hours
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