The Arecibo telescope located on the island of Puerto Rico in the Carribean. With a diameter of 305 m it is the largest radio
telescope in the world. Credit: Courtesy of the NAIC - Arecibo Observatory, a facility of the NSF
This material is based upon work supported by the National Science
Foundation (NSF) under Grant PHY-0555655 and by the Max Planck
Gesellschaft (MPG). Any opinions, findings, and conclusions or
recommendations expressed in this material are those of the investigators
and do not necessarily reflect the views of the NSF or the MPG.