That interstellar traveler is none other than NASA's Voyager 1, which used its backup radio transmitter, which hasn't been activated since 1981, to send a message back to Earth. The message came after ...

Harvard scientist Avi Loeb wants to send a message to the interstellar object, which he claims could be an alien spacecraft that has come to probe Earth and the other planets. He has suggested sending ...

Use left and right arrow keys to seek audio. NASA has confirmed that it has received a message from a spacecraft located more than 15 billion miles away from Earth. That spacecraft is none other than ...

Add Yahoo as a preferred source to see more of our stories on Google. On November 16, 1974, humans sent their first message to the stars in an attempt to contact extraterrestrials.They did this using ...

Since the early 1970s, humanity has sent messages beyond the Solar System in the hopes of contacting another civilization. Some were physically attached to interstellar spacecraft, while others were ...