Fig. 1. A star-formation site, nebula NGC 6357, showing the scope of photonics on a macro scale. Image reproduced with permission. X-ray: NASA/CXC/PSU/L.Townsley et al.; Optical: UKIRT; Infrared: NASA/JPL-Caltech.

Fig. 2. Multicolor imaging of a living hypha of Neurospora crassa, showing the range of optical technology on a micro scale. Image reproduced with permission. J. Licea-Rodriguez et al., J. Biomed. Opt.24(1), 016501 (2019).