The importance of light reaches far beyond life on Earth. Through major scientific discoveries and technological advancements, light has helped us to see and better understand the universe. Discover breakthroughs in Astronomy, view stunning images of the cosmos, and learn more about dark skies.
This website was developed by Lightsources.org, a collaboration between communicators from light source facilities around the world.
IYL2015 is a global initiative adopted by the United Nations to raise awareness of how optical technologies promote sustainable development and provide solutions to worldwide challenges in energy, education, agriculture, communications and health.