![]() local time the iconic Arecibo Observatory collapsed, devastating the radio-astronomy community and planetary-radar scientists. (Courtesy: Robert Minchin) On 1 December 2020 disaster struck on the island of Puerto Rico. It would be used for many major discoveries including the first direct. A petition to rebuild the collapsed Arecibo Observatory, has had more than 60,000 signatures. Starting in 1963, the 305-meters across Arecibo Telescope in Puerto Rico USA reigned as the largest single-dish radio telescope in the world for over 50 years. A report from Caixin, a Beijing news agency says getting the telescope fully operational will require dozens, if not hundreds of astronomers, but so far the country hasn't even been able to track down 50 people for the job. November 1, 1963, the largest radio telescope ever constructed, the Arecibo Observatory opened in Arecibo Puerto Rico. Arecibo Telescope Collapse Video Credit: Carlos Perez, Adrian Bague, Arecibo Observatory, NSF Explanation: This was one great scientific instrument. Yet FAST is still not running anywhere close to its full capacity, and when it will be able to do so in uncertain. ![]() Initial FAST tests have been encouraging: a recent test detected a pulsar that was 1,351 light-years away. "In theory, if there is civilization in outer space, the radio signal it sends will be similar to the signal we can receive when a pulsar is approaching us," said Qian. The Arecibo Observatory, the worlds largest radiotelescope, was dedicated in 1963. And yes, in the process it might even pick up a call from ET. ![]() It will also be on the lookout for pulsars, the rotating remnants of dead stars which could reveal gravitational waves emitted from black holes. Arecibo Ionospheric Observatory Commissioned for service, 1 November, 1963. Unlike Arecibo, which is used for everything from listening for extraterrestrial transmissions to hunting for giant killer asteroids and studying Earth's atmosphere, FAST will primarily be investigating the evolution of the universe as it is written in neutral hydrogen, the raw material of stars and the most abundant element in the universe. ![]()
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