An industrial project in Chile threatens Earth's darkest sky. 28 leading astronomers signed an open letter urging to move it
December 11, 2025
German Nobel Prize-winning astrophysicist Reinhard Genzel has penned a letter urging the government of Chile to halt the development of a green hydrogen plant in the vicinity of one of the world’s top astronomical observatories.
In the letter, Genzel and 30 other world-leading astronomers urge Chilean leaders to protect the pristine, unpolluted night sky above Cerro Paranal, an…