Andromeda's once and future starsJohn Roach says: A pair of space telescopes is giving astronomers an unprecedented view of stellar birth and death in the Andromeda Galaxy, located about 2.5 million light-years away.
The combined image was made using data from the European Space Agency's Herschel and XMM-Newton observatories, which targeted the galaxy during Christmas 2010.
The space telescopes view the universe in wavelengths of light that are absorbed by Earth's atmosphere and thus unavailable to ground-based telescopes.
Herschel, which is sensitive to far infrared light, picks up the rings of star formation seen here as reddish circles filled with clouds of cool dust and gas. It is the most detailed image ever acquired of the galaxy in this wavelength, showing five concentric rings of star-forming dust, ESA reports in today's image advisory.
http://cosmiclog.msnbc.msn.com/_news/2011/01/05/5771179-andromedas-once-and-future-stars