In 1998 ground controllers lost contact with the Sun-watching SOHO spacecraft and feared it might be gone for good, until the Arecibo radio telescope in Puerto Rico pinged the silent, slowly tumbling craft — beginning a months-long effort to coax it back to life.

In 1998 ground controllers lost contact with the Sun-watching SOHO spacecraft and feared it might be gone for good, until the Arecibo radio telescope in Puerto Rico pinged the silent, slowly tumbling craft — beginning a months-long effort to coax it back to life. – Space