Since then, there have been quite a few, but Pioneer 10 was the first one to do so. We had no idea where it would end up and just in case it was discovered by an intelligent race of beings, it carried a plaque prepared by Carl Sagan.
The above picture shows Sagan holding the plaque he designed to be placed on Pioneer 10. Want to see a close up view of the plaque? OK, here it is:
It is a gold-anodized plaque that measures 6" by 9" and displays a drawing of a human man and woman, a star map that shows the location of the sun, and another map that showed the flight path of the probe.
It is hard to believe that it was launched that many years ago and is still going where man has never gone. Now, be careful today, you all know that along with a full moon, it is also Friday the Thirteenth, but have a great day, you hear?