1969 · Aristarchus crater, the Moon
The lights at Aristarchus
WhenJuly 19, 1969
WhereAristarchus crater, the Moon
Backing4 independent
Witnesses2 named
Evidencedocuments, sensor data
In their own words
“an area that is considerably more illuminated than the surrounding area. It just has, seems to have a slight amount of fluorescence to it”
Neil Armstrong, Apollo 11 commander, air-to-ground transcript, 19 July 1969
Astronomers had logged hundreds of 'transient lunar phenomena', glows, flashes and mists on the Moon, many of them at the bright crater Aristarchus. While Apollo 11 was in lunar orbit, Mission Control passed on a report from observers in Bochum, West Germany, and asked the crew to look. Neil Armstrong said one area was 'considerably more illuminated than the surrounding area', and Buzz Aldrin described a faint fluorescence along a wall of the crater.
Evidence, in date order (4)
- 1968NASA Technical Report R-277documentcatalogue of 579 transient lunar phenomena, many at Aristarchus NASA TR R-277, 'Chronological Catalog of Reported Lunar Events' (1968)
- 19 Jul 1969Pruss and Witte (Bochum observatory)witnessindependently reported a 5-7 second brightening at Aristarchus at the time of the call Crotts: 'Transient lunar phenomena: regularity and reality' (2007)
- 19 Jul 1969Whelan (New Zealand)witnessreported a pulsing glow at Aristarchus about 12 hours earlier Crotts: 'Transient lunar phenomena: regularity and reality' (2007)
- 1973Apollo 15 alpha-particle spectrometersensor datadetected recent radon release from Aristarchus Gorenstein & Bjorkholm 1973: radon from Aristarchus (Science)
How plausible · Very high
The Apollo 11 crew saw the glow while ground observers reported it independently.
- ●●Access Direct observation or instruments.
- ●●No gain sought Nothing to gain.
- ●●Restraint Reported plainly.
- ●●Character record Trained professionals.
- ●●Independent convergence Independent sources agree.
- ●●Checkable details check out Released official records.
Plausibility weighs how well an account fits where secrecy hides the documents by design, so missing records never count against it. Strength measures what is documented. Assessed 2026-10-23.
On the record
- The Apollo 11 air-to-ground transcript, July 19, 1969.Apollo 11Moon pigeonsApollo 8's far-side lightFlashes on the Moon: Apollo 16, Apollo 17, Artemis II
- NASA's 1968 catalogue of 579 transient lunar phenomena (Technical Report R-277), many at Aristarchus.
- Apollo 15's photographs of Aristarchus and Schröter's Valley, 1971.Apollo 11Moon pigeonsApollo 8's far-side lightFlashes on the Moon: Apollo 16, Apollo 17, Artemis II
- Apollo 11 transcript: Armstrong reports Aristarchus 'considerably more illuminated than the surrounding area' with 'a slight amount of fluorescence'; Collins says 'there doesn't appear to be any color involved'.Apollo 11Moon pigeonsApollo 8's far-side lightFlashes on the Moon: Apollo 16, Apollo 17, Artemis II
- Houston's request followed a report from German astronomers of a glow at Aristarchus (per the documentary; the German report itself still to find).
- Houston told the crew of 'lunar transient events reported in the vicinity of Aristarchus' (transcript ~03:05:18-03:05:35). Pruss and Witte at Bochum independently reported a 5-7 second brightening at the time of the call; Whelan in New Zealand reported a pulsing glow about 12 hours earlier (Crotts, arXiv 0706.3947).
Claims
The glows are artificial lights or activity, the kind Ingo Swann later said he saw on the Moon.Swann on the MoonFlashes on the Moon: Apollo 16, Apollo 17, Artemis IIspeculationSourced, unconfirmedbelievers
Max: after Houston asked about a monocular, Aldrin said 'stand by one' and there is a break of over a minute (to check against the transcript).analysisSourced, unconfirmed
Max: LRO shows an 'entrance'-like structure 50-200 m across in the Aristarchus wall (found by the Lunar Anomalies Facebook page; frame not given).analysisSourced, unconfirmed
Max: Clementine shows Aristarchus luminescing in UV; Apollo 15 detected radon there; Apollo 18 was to land nearby.Apollo 11Moon pigeonsApollo 8's far-side lightFlashes on the Moon: Apollo 16, Apollo 17, Artemis IIanalysisSourced, unconfirmed
TLP researchers were pushed out in the early 1970s. Per Peter Schultz in a private e-mail to Max: Barbara Middlehurst and Winifred Cameron were pressured out of transient lunar phenomena work because TLP conflicted with the 'dead Moon' view.Swann on the MoonFlashes on the Moon: Apollo 16, Apollo 17, Artemis IIsecondhandSourced, unconfirmedPeter Schultz
Where
Aristarchus crater, the Moon
23.7°N 47.4°W on the Moon
In The picture
The pictureSomeone was here first. Apollo 11’s crew saw the glow at Aristarchus while observers on Earth reported it, astronauts on three missions saw flashes on the Moon that NASA’s Artemis II report confirms, and Cernan watched a distant ‘flasher’. China’s Chang’e-6 brought back far-side soil holding single-walled carbon nano…
‹ Previous in Moon & MarsMoon pigeons5 of 20Next in Moon & Mars ›Apollo 12: lights 'escaping the Moon' and the tracking-light puzzle
Similar cases · sharing people, threads, topics or era
Connected cases
Apollo 11 1969Moon pigeons 1969Apollo 8's far-side light 1968Clementine's blurred areas 1994Flashes on the Moon: Apollo 16, Apollo 17, Artemis II 1972NASA, secrecy and the archive anomalies 1958Swann on the Moon 1975
People and organizations
Apollo 11 missionApollo 15 missionApollo 18 (cancelled) missionBarbara Middlehurst personBuzz Aldrin personIngo Swann personMichael Collins personNeil Armstrong personPeter Schultz personWinifred Cameron personAristarchus crater (Moon) placeCrotts: 'Transient lunar phenomena: regularity and reality' (2007) documentGorenstein & Bjorkholm 1973: radon from Aristarchus (Science) documentNASA TR R-277, 'Chronological Catalog of Reported Lunar Events' (1968) documentIngo Swann, 'Penetration: The Question of Extraterrestrial and Human Telepathy' (1998) documentReality Check: 'Is Buzz Aldrin being forced into silence after witnessing a UFO?' document