W28: A Mixed Bag of Supernova Remnant

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Credit: Chandra X-ray: NASACXCHSCJ. Keohane et al ROSAT X-ray: NASAROSAT Optical: NOAOCTIOP.F. Winkler et al Radio: NSFNRAOVLAG. Dubner et al.
Credit: Chandra X-ray: NASA/CXC/HSC/J. Keohane et al; ROSAT X-ray: NASA/ROSAT; Optical: NOAO/CTIO/P.F. Winkler et al; Radio: NSF/NRAO/VLA/G. Dubner et al.

When some stars die, they explode as supernovas and their debris fields (aka, "supernova remnants") expand into the surrounding environments. There are several different types, or categories, of supernova remnants. One of these is known as a mixed-morphology supernova remnant.


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