On November 16, 1974, humans sent their first message to the stars in an attempt to contact extraterrestrials. They did this using what was then the largest radio telescope in the world, located at ...

The small, icy visitor now racing away from the inner solar system is not just another comet. It is an interstellar object, ...

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 ...