An "average" man and an "average" woman stand before an outline of the spacecraft. The man's hand is raised in a gesture of good will to any "alien" who might find the plaque.
It was assumed that "advanced civilizations" would know enough about hydrogen to translate the message.
A map showing the Sun's position in the Galaxy was included to show "them" how to find us.
Pioneer 10 is now 6.6 billion miles away, being the farthest man-made object from the Earth. It is travelling towards the constellation Taurus, and is expected to arrive in 2 million years time.
As far as we know, no "alien" or "advanced civilisation" has yet seen the plaque!
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