A new study unveils NGC 604, the largest region of star formation in the nearby galaxy M33, in its first deep, high-resolution view in X-rays. This composite image from Chandra X-ray Observatory data (colored blue), combined with optical light data from the Hubble Space Telescope (red and green), shows a divided neighborhood where some 200 hot, young, massive stars reside.
Normal Galaxies & Starburst Galaxies
M101: A large spiral galaxy about 25 million light years away in the constellation Ursa Major. More at http://chandra.harvard.edu/photo/2008/m101/
Download the desktop: http://chandra.harvard.edu/resources/desktops_year.html?year=2008
Last week, we put out a press release on an elliptical galaxy known as NGC 4649. Using Chandra data, a group of astronomers measured the temperature of the hot gas around the galaxy to come up with an independent way to measure the size of the gigantic black hole at the center. You can read more about the details in the press release.
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