Arecibo Observatory (IMAGE) University of Arizona Caption Featured in movies such as "Golden Eye" and "Contact," the distinctive dish of Arecibo Observatory is the world's largest single-aperture radio telescope. For this study, it was used to measure the distance between Earth and asteroid 1999 RQ36 to an accuracy of 300 meters (984 feet). Credit Photo courtesy of the NAIC - Arecibo Observatory, a facility of the NSF Usage Restrictions This visual may only be used in conjunction with reporting/posting of this news release. Image/video credit must be included exactly as indicated. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.