The Great Moon Hoax of 1835
In 1835 the New York Sun published six articles describing bison, bipedal beavers and winged humanoids observed on the Moon through a new telescope. Circulation soared. The astronomer credited with the discoveries knew nothing about it.
Why this verdict
Debunked at the time and admitted in outline by the newspaper that ran it; included because it is the earliest fully documented case of a mass-media fabrication working exactly as modern ones do.
- Period
- Region
- Reading time
- Sources
01The claim
The articles asserted that Sir John Herschel, observing from the Cape of Good Hope with an immense new telescope, had catalogued lunar oceans, forests, temples of polished sapphire, and an intelligent species of winged humanoid the writer named Vespertilio-homo.
02Where it came from
The Sun was a penny paper competing on volume in a crowded New York market. The series, published from 25 August 1835 and probably written by Cambridge-educated reporter Richard Adams Locke, was attributed to a fictitious 'Dr Andrew Grant' and presented as reprinted from a supplement to the Edinburgh Journal of Science — a real journal that had ceased publication. Herschel was genuinely at the Cape conducting a real survey of the southern sky, which made the setting checkable enough to be convincing and slow enough to correspond with that the deception had weeks to run.
03What the record shows
✕ DEBUNKED — Investigated and refuted. Here is what actually happened.
There is no dispute about the facts; the interest is in the mechanism. The account contained internal absurdities visible to any astronomer — the described magnification would have required an instrument physically impossible to build, and the claim to observe flowers on the Moon implies a resolution beyond the diffraction limit of any aperture then conceivable. Rival papers, notably the New York Herald, identified it as fiction within weeks. The Sun never printed a full retraction, acknowledging only obliquely that the articles might have been satirical.
Herschel learned of his discoveries months later from visitors at the Cape, was initially amused, and became irritated by the enquiries that followed him for years. Edgar Allan Poe, who had published a lunar voyage story of his own that June, complained loudly that Locke had taken his idea.
Whether the public was truly fooled is contested by media historians: contemporary readers of penny papers were accustomed to embellishment, and some evidently enjoyed the series as entertainment. The circulation figures, however, were real, and the episode established that a fabrication with the surface texture of a scientific report will out-compete the correction.
04What it cost
The hoax made the Sun briefly the highest-circulation newspaper in the world, and it is the origin point of a lineage running through the 1938 War of the Worlds panic reporting — itself substantially exaggerated by rival print media — to modern engagement-optimised falsehood. Every structural feature of contemporary misinformation is present in 1835: fabricated credentials, a real expert's name used without consent, a citation to a defunct source, and a business model rewarding the fabrication.