These devices allow scientists to determine what something is made of by shining light through an object and recording what colors are absorbed. Professional spectrometers cost many thousands of ...

NASA's James Webb Space Telescope (JWST) has captured the earliest evidence of light shining through the cosmos. An international team of researchers used JWST to observe an ancient galaxy that ...

The fun doesn’t stop at germanium. In experiments, thin layers of gold—yes, the real deal—allowed visible light to shine through, provided the metal was reduced to a thickness of 100 ...