Two of the cables that held the platform over the radio dish had snapped this year
On Tuesday, a 900-tonne receiver platform plunged almost 140 metres onto dish below
A massive radio telescope at Puerto Rico’s Arecibo Observatory – one of the world’s largest – collapsed on Tuesday after sustaining severe damage since August, officials said, following 57 years of astronomical discoveries.
The deteriorating telescope’s 900-tonne instrument platform, suspended by cables 137 metres above a 305-metre-wide bowl-shaped reflector dish, fell on Tuesday morning, the US National Science Foundation said. No injuries were reported, it added.
The telescope – which received radio waves from space – had been used by scientists around the world to hunt for possible signatures of extraterrestrial life, study distant planets and find potentially hazardous asteroids. It also gained fame after pivotal scenes in the 1995 James Bond film
starring Pierce Brosnan were shot there.
Two cables supporting the reflector dish had broken since August, causing damage and forcing officials to close the observatory as engineering firms retained by the University of Central Florida, which manages the observatory, studied ways to repair the damage.
In November, the engineering reviews led the NSF and the university to conclude that efforts to repair the structure would be too dangerous and that it would have to be demolished.
The NSF said that initial findings indicated that the top section of all three of the telescope’s support towers broke off and that as the instrument platform fell, the telescope’s support cables also plummeted.
The observatory also includes other scientific assets such as a 12-metre telescope used for radio astronomy research and a facility used to study the Earth’s upper atmosphere and ionosphere. The observatory’s learning centre, located next to the telescope, sustained significant damage from falling cables, the NSF said.
“We are saddened by this situation but thankful that no one was hurt,” NSF Director Sethuraman Panchanathan said in a statement. “Our focus is now on assessing the damage, finding ways to restore operations at other parts of the observatory, and working to continue supporting the scientific community, and the people of Puerto Rico.”
The NSF said it will authorise the university to continue paying Arecibo staff and to come up with a plan to continue research at the observatory. The agency said it has not determined the cause of the initial cable failure in August.
Among the telescope’s successes was in 1992 discovering the first exoplanet – a planet outside the solar system – and in 1981 it helped produce the first radar maps of the surface of Venus.