Protection areas for night skies multiply with growing movement
The movement against too much artificial light at night celebrates International Dark Sky Week in April.
European Southern Observatory (ESO)
The European Southern Observatory is an intergovernmental organization for astronomical research. ESO operates some of the world's most powerful ground-based telescopes in the Atacama Desert in Chile, including the Very Large Telescope, and is currently building the even larger Extremely Large Telescope.
Enjoy our Free+ stories and our weekly newsletter
Start your free accessAlready have an account? Log in