a NASA essay collection
... that a NASA essay collection said ancient carvings "might have been made by aliens"?
... that <b id="mwBzU"><a href="./Archaeology,_Anthropology,_and_Interstellar_Communication" id="mwBzY" rel="mw:WikiLink" title="Archaeology, Anthropology, and Interstellar Communication">a NASA essay collection</a></b> said ancient carvings "might have been made by aliens"?