Hiding in the Light

"Hiding in the Light" is the fifth episode of the American documentary television series Cosmos: A Spacetime Odyssey. It premiered on April 6, 2014 on Fox and aired on April 7, 2014 on National Geographic Channel. The episode explores properties of light, cameras, the scientific method, and the composition of the universe. The episode includes a look at the contributions of the 10th century physicist Ibn al-Haytham, described as the "father of the modern scientific method". The episode was received positively by critics, with many remarking on the brilliant visuals of the end sequence completed with Rhapsody in Blue "showcasing the same image of New York City, viewed through the filters of various wavelengths of light: visible, infrared, ultraviolet, X-ray, gamma ray, microwave, and even a radio image". The episode maintained the previous week's 18-49 rating/share of 1.5/4, with 3. 98 million American viewers watching on Fox.