1Ohio State University Radio Observatory (Big Ear), Delaware, OhioRadio telescope (demolished 1998)
Within 100 m5 events · 3 artifacts
2Arecibo Observatory, Puerto RicoRadio telescope (305 m dish collapsed 2020)
Within 100 m2 events · 1 artifact
3Mount Pleasant Radio Observatory, TasmaniaRadio telescope
Within 1 km1 event