“In March 1953 an organization known as the International Flying Saucer Bureau sent a bulletin to all its members urging them to participate in an experiment termed ‘World Contact Day’ whereby, on March 15 at a predetermined time, they would attempt to collectively send out a telepathic message to visitors from outer space. The message began with the words…’Calling occupants of interplanetary craft!'”
Apparently, no one replied.
But the old news story inspired a Canadian band to form with the peculiar name of Klaatu. The group name came from the science-fiction classic 1951 film “The Day the Earth Stood Still,” in which the immortal phrase “Klaatu Barada Nikto” is uttered to stop the robot Gort from destroying the earth after the humanoid Klaatu (Michael Rennie) is shot and (temporarily) killed. Obviously, Ringo Starr copped the imagery for his 1974 album, which helped fuel the rumor that Klaatu was really the Beatles.
In the mid-1970s, Klaatu wrote and recorded the song Calling Occupants Of Interplanetary Craft (The Recognized Anthem of World Contact Day), or Calling Occupants on the label. Here’s a verse:
Please come in peace we beseech you
Only a landing will teach them
Our earth may never survive
So do come we beg you
Please interstellar policemen
Won’t you give us a sign
Give us a sign that we’ve reached you
And here’s a link to the single. 
The song was covered by the Carpenters(!), who took it to #32 in the US charts in 1977.
Coincidentally, two both Voyager spacecraft were launched in 1977, each with a golden phonograph record designed to “contain sounds and images selected to portray the diversity of life and culture on Earth, and are intended for any intelligent extraterrestrial life form, or for future humans, who may find them.”
There are, of course, plenty of movies of visitors from another planet; here’s somebody’s top 10 list. Conversely, the 50th anniversary of an Earth human actually going out into space is this month.
As we know more about the universe, it becomes increasingly doubtful, at least to me, that there isn’t intelligent life SOMEWHERE out there. Although I was a bit distressed by the fact that 1/3 of the Russians and 1/5 of the Americans on THIS planet believe the sun goes around the earth. Oy.
