Puerto Rico's iconic radio telescope at the Arecib...

Puerto Rico's iconic radio telescope at the Arecibo Observatory completely collapsed. Cables supporting the structure snapped and caused damage in November. The telescope s 900-ton receiver platform fell more than 400 feet, destroying the massive reflector dish Tuesday.

The Arecibo Observatory's big radio dish was the 2nd largest in the world but was recently slated for demolition after November's cable failure. The observatory was featured in the 1997 Sci-Fi movie 'Contact' and was responsible for many groundbreaking discoveries.