Credit: D. Capela (University of Lisbon), M. G. Guarcello (INAF-OAPA) and the EWOCS team
This image of Westerlund 1, one of the most massive young super star clusters in the Milky Way, combines data from JWST’s MIRI and NIRCam instruments to reveal detailed structures within the cluster's environment. The color image reveals intricate details of gas and dust in the cluster, with longer-wavelength mid-infrared emission (red) highlighting warm dust and gas, shorter mid-infrared emission (green) tracing complex structures of cooler dust and gas, and near-infrared emission (blue) showcasing the brilliant light of young, massive stars embedded in this cluster. These observations provide important insights into how stellar winds and radiation from massive stars interact with the surrounding material, shaping the cluster's morphology and influencing its evolution. North is 15 degrees to the right of up and east is to the left.