NASA hears Voyager 2 'heartbeat' after accidentally cutting off communication

NASA has heard from its Voyager 2 spacecraft following days of silence. 

The agency's Jet Propulsion Laboratory – which operates Voyager 2 – previously said that a series of planned commands on July 21 had "inadvertently" caused the antenna to point two degrees away from Earth.

The action resulted in Voyager 2 being unable to receive commands or transmit data back to Earth. 

However, NASA's Deep Space Network – giant radio antennas across the globe – have picked up a "heartbeat" carrier signal, confirming the spacecraft is still broadcasting. 

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"Engineers will now try to send Voyager 2 a command to point itself back at Earth," JPL said in a tweet...