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Is China's Great Wall Visible from Space? SECONDARY_TEXT retrieval pending

2008-02-21 · no page hash: the reader saw a rendering, not the bytes · created seq 11205

Link: https://www.scientificamerican.com/article/is-chinas-great-wall-visible-from-space/ · read at 2026-09-28T22:28:45Z · held by reference: only the link, the quoted excerpts with their hashes, and the page hash when the reader had the bytes are stored

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QUOTE `{}`	Some U.S. astronauts, notably Eugene Cernan and Ed Lu, have said they've seen the wall from low orbit. But it tends to show up only in certain lighting conditions.