Optical (left) and infrared (right) image of NGC346 in the SMC. Each image shows an area on the sky of approximately 3.5′×3.5′ (≈62 pc × 62 pc at d = 61 kpc). The positions of the main ionising sources of NGC 346 (see Sect. 6.4), namely SSN 7 (ON3 If^*+O5.5 V((f))) and SSN 9 (O2 III(f^*)), are highlighted by red and green squares, respectively. The false-colour optical image was taken with the HST ACS. Credit: A. Nota (ESA/STScI). The false-colour infrared image was taken with the James Webb Space Telescopes (JWST) Near Infrared Camera (NIRCam). Credits: NASA, ESA, CSA, O. Jones (UK ATC), G. De Marchi (ESTEC), and M. Meixner (USRA). Image processing: A. Pagan (STScI), N. Habel (USRA), L. Lenkic (USRA), and L. Chu (NASA/Ames).