Alien replies to NASA’s spacecraft signals might reach us by 2029
A radio antenna on the Deep Area Community’s Canberra facility in Australia
NASA/Canberra Deep Area Communication Complicated
If aliens are close by and listening in on our spacecraft command alerts, we might hear again from them as early as 2029.
Since 1972, NASA has used a system of radio antennae referred to as the Deep Area Community (DSN) to trace spacecraft and ship highly effective radio alerts in direction of them.
Howard Isaacson on the College of California, Berkeley, and Reilly Derrick on the College of California, Los Angeles, labored out which stars these radio alerts could have reached and when …
