Thursday, August 03, 2006

Space the Final Frontier, Milky Way galaxy

Target Name: Milky Way, Mission: Spitzer Space Telescope (SST), Spacecraft: Spitzer Space Telescope (SST), Instrument: Infrared Array Camera (IRAC)Target Name: Milky Way, Mission: Spitzer Space Telescope (SST), Spacecraft: Spitzer Space Telescope (SST), Instrument: Infrared Array Camera (IRAC). Product Size: 7002 samples x 5050 lines, Produced By: California Institute of Technology.
Full-Res JPEG: PIA03654.jpg (7.727 MB)

Original Caption Released with Image: This dazzling 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.

Scientists are intrigued by the giant lobes of dust extending away from the plane of the galaxy. They believe the lobes may have been formed by winds from massive stars.

This image is a mosaic of thousands of short exposures taken by Spitzer's infrared array camera, showing emissions from wavelengths of 3.6 microns (blue), 4.5 microns (green), 5.8 microns (orange), and 8.0 microns (red). The entire region was imaged in less than 16 hours.

Image Credit: NASA/JPL-Caltech

NASA images generally are not copyrighted. Unless otherwise noted, images and video on JPL public web sites (public sites ending with a jpl.nasa.gov address) may be used for any purpose without prior permission. The endorsement of any product or service by Caltech, JPL or NASA must not be claimed or implied.

Leave a comment, make a request, Let this small sampling be a guide to better quality, more plentiful, public domain, royalty free, copyright free, high resolution, images, stock photos, jpeg, jpg, free for commercial use, clip art, clipart, clip-art. more at and or and or and or and or and or

No comments:

Post a Comment