File:Webb, Chandra, Hubble, and Spitzer Together Explore Cassiopeia A (SVS31288 - 53391078649 c56312fa0d o).jpg

English: This image provides a side-by-side comparison of supernova remnant Cassiopeia A (Cas A) as captured by NASA’s James Webb Space Telescope’s NIRCam (Near-Infrared Camera) and MIRI (Mid-Infrared Instrument).At first glance, Webb’s NIRCam image appears less colorful than the MIRI image overall, however, this is only due to the wavelengths in which the material from the object is emitting its light. The NIRCam image appears a bit sharper than the MIRI image due to its increased resolution.The outskirts of the main inner shell, which appeared as a deep orange and red in the MIRI image, looks like smoke from a campfire in the NIRCam image. This marks where the supernova blast wave is ramming into surrounding circumstellar material. The dust in the circumstellar material is too cool to be detected directly at near-infrared wavelengths, but lights up in the mid-infrared.Also not seen in the near-infrared view is the loop of green light in the central cavity of Cas A that glowed in mid-infrared, nicknamed the Green Monster by the research team. The circular holes visible in the MIRI image within the Green Monster, however, are faintly outlined in white and purple emission in the NIRCam image.Read more: go.nasa.gov/3NoVwBI