Iconic Space Images Are Actually Black-and-White: Here’s How NASA Colorizes Hubble Shots


Did you know that the Hubble Space Telescope can only take black-and-white images? In order to capture a maximum amount of information in their space photos, NASA captures multiple black-and-white images using different filters in the camera. These images are then combined in post to create the iconic color photographs by analyzing the wavelengths of light that different elements emit in space. The retoucher has blue, green, and red layers for light from oxygen, hydrogen, and sulfur, respectively.