Discover the cosmos!Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
Explanation:What created this gigantic hole? The vastemission nebulaN44 in our neighboring galaxy theLarge Magellanic Cloud has a large, 250light-year hole and astronomers are trying to figure out why. One possibility isparticle winds expelled by massive stars in thebubble's interior that are pushing out the glowing gas. This answer has beenrecently found to be inconsistent with measured wind velocities, however. Another possibility is that the expanding shells of oldsupernovas have sculpted the unusual space cavern. An unexpected clue of hotX-ray emitting gas was recently been detected escaping theN44 superbubble. Theabove image, here digitally sharpened, was taken in three very specific colors by thehuge 8-meterGemini South Telescope onCerro Pachon inChile.
Authors & editors:Robert Nemiroff(MTU) &Jerry Bonnell(USRA)
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&Michigan Tech. U.