Click to enlargeSpitzer RCW 79 Bubble Bursts Photo

Buy this RCW 79 Bubble Bursts photo. High quality Spitzer space picture, poster, slide, or Duratrans backlit transparency. NASA photograph PIA07841. Wide variety of sizes.
Click to see selection as Astronomy Picture of the Day (APOD) - April 15, 2005


RCW 79 is seen in the southern Milky Way, 17,200 light-years from Earth in the constellation Centaurus. The bubble is 70-light years in diameter, and probably took about one million years to form from the radiation and winds of hot young stars. The balloon of gas and dust is an example of stimulated star formation. Such stars are born when the hot bubble expands into the interstellar gas and dust around it. RCW 79 has spawned at least two groups of new stars along the edge of the large bubble. Some are visible inside the small bubble in the lower left corner. Another group of baby stars appears near the opening at the top.

NASA's Spitzer Space Telescope easily detects infrared light from the dust particles in RCW 79. The young stars within RCW 79 radiate ultraviolet light that excites molecules of dust within the bubble. This causes the dust grains to emit infrared light that is detected by Spitzer and seen here as the extended red features.

Addition Date: April 18, 2005
Image Credit: NASA/JPL-Caltech/E. Churchwell (University of Wisconsin-Madison)


PIA07841
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