Hurricane Maria severely damaged Puerto Rico’s electricity and communications systems. Millions of people there are without power, water or food. The storm also caused damage to a well-known scientific tool in the U.S. territory the Arecibo Observatory. Until last year, it was the largest single telescope of its kind in the world. Many of the observatory’s instruments appear to be unharmed. Arecibo Deputy Director Joan Schmelz called that “a thing to be thankful for” in an interview with the Associated Press. But a large antenna used to study the Earth’s upper atmosphere broke during the storm, the AP reported. Damage to the observatory is estimated to be in the millions of dollars.