Quantum physics Instagram post template https://www.rawpixel.com/image/14802326/quantum-physics-instagram-post-templateView licenseNeutron star Interior Composition Explorer (NICER). Many of NICER’s 56 X-ray “concentrators” seen from… https://www.rawpixel.com/image/440066/free-photo-image-x-ray-composition-detectorFree Image from public domain license