ARECIBO, Puerto Rico (AP) — A huge, already damaged radio telescope in Puerto Rico that has played a key role in astronomical discoveries for more than half a century completely collapsed on Tuesday.

Astronomers compare losing the observatory in Puerto Rico to losing a big brother. It was once the world's largest single-dish radio telescope. Updated on Dec. 4 at 11:30 a.m. ET The Arecibo ...

Requested by the Director of the National Science Foundation "Analysis of Cause(s) of Failure and Collapse of the 305-Meter Telescope at the Arecibo Observatory in Puerto Rico" The committee will ...

This activity was supported by Grant CMMI- 2135084 from the National Science Foundation to the National Academy of Sciences. Any opinions, findings, conclusions, or recommendations expressed in this ...