... Arecibo: The Largest Telescope . ... The Arecibo radio telescope is currently the largest single-dish telescope in the world. ... The Arecibo telescope has been used for many astronomical research projects, including . ... Europa's Ice Rafts . ... The surface of Jupiter's moon Europa has shifted. ... Pieces of Europa's surface, identifiable above, have rafted to new locations. ... Comet Hale-Bopp Over New York City . ... What's that point of light above the World Trade Center? ...