Arecibo Observatory's 305-meter radio telescope collapses
- When
- Where
- Arecibo, Puerto Rico
- Sources
- 2 public sources

The 305-meter radio telescope at Arecibo Observatory in Puerto Rico collapsed after the National Science Foundation had announced it would be decommissioned. The dish had sent the 1974 Arecibo message; a National Academies report later analyzed why it failed.