Alien messages responding to NASA signals could reach us in 2029

Alien may reach NASA's spacecraft signals by 2029

A radio antenna at Deep House Community’s Canberra facility in Australia

NASA/Canberra Deep House Communications Advanced

If aliens are close by and listening for our spacecraft’s command indicators, we may hear from them as early as 2029.

Since 1972, NASA has used a radio antenna system referred to as the Deep House Community (DSN) to trace spacecraft and ship highly effective radio indicators to them.

Howard Isaacson Reilly Derrick of the College of California, Berkeley, and the College of California, Los Angeles, calculated which stars these radio indicators might need reached and when.

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