Explorer S-55

Explorer S-55 was an artificial satellite, launched by NASA from the United States of America, and orbited Earth during the mid-20th century. An image of this satellite was stored in the library computer of the . This image was later retrieved by the Talosians during their survey of the library computer's contents in 2254. ()
== External link ==
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fr:Explorer 16
Category:Earth probes (retconned)