On December 1, local time, the National Science Foundation said that the Arecibo radio telescope in Puerto Rico collapsed between the evening of November 30 and the early morning of December 1.

  In August and November 2020, the Arecibo radio telescope had two accidents in which the supporting steel cable broke loose and destroyed the mirror surface. After evaluation, the National Science Foundation announced on November 19 local time that it would The Arecibo radio telescope was formally arranged to "retire" and to be dismantled, but while the dismantling plan was still in progress, the telescope platform collapsed.

  The Arecibo Observatory is one of the most famous observatories in the world, and is used in three main research fields: radio astronomy, atmospheric science and radar astronomy.

(Edit Shan Lu)

Editor in charge: [Ji Xiang]