A new mid-infrared image from the Mid-Infrared Instrument (MIRI) onboard the NASA/ESA/CSA James Webb Space Telescope shows the supernova remnant Cassiopeia A, created by a stellar explosion more than 11,000 years ago.
This new image from Webb’s Mid-Infrared Instrument (MIRI) shows Cassiopeia A, a supernova remnant located about 11,000 light-years from Earth in the constellation Cassiopeia. Image credit: NASA / ESA / CSA / D.D. Milisavljevic, Purdue University / T. Temim, Princeton University / I. De Looze, Ghent University / J. DePasquale, STScI.
On the bubble’s exterior, particularly at the top and left, lie curtains of material appearing orange and red due to emission from warm dust.
This marks where ejected material from the exploded star is ramming into surrounding circumstellar gas and dust.
Interior to this outer shell lie mottled filaments of bright pink studded with clumps and knots.
This represents material from the star itself, which is shining due to a mix of various heavy elements, such as oxygen, argon, and neon, as well as dust emission.
https://www.sci.news/astronomy/webb-sup ... 11817.html