The Dogon–Sirius claim is the idea that the Dogon people of Mali knew, long before Western astronomers, that the bright star Sirius has a small, extremely heavy, invisible companion circling it about every 50 years. The claim rests on French ethnographic accounts by Marcel Griaule and Germaine Dieterlen, was popularised by Robert Temple's The Sirius Mystery (1976) as evidence of contact with beings from Sirius, and was challenged in 1991 when anthropologist Walter van Beek reported that the Dogon he worked with had no such tradition.
It matters because few ancient-contact arguments are as specific. Most claims point to a carving or a legend that can be read many ways; this one appears to name a measurable astronomical fact. That makes it testable, which is why it has been argued over by ethnographers, astronomers and ancient-astronaut writers for half a century, and why it sits alongside the Mesopotamian material on the Anunnaki topic hub.
Who are the Dogon?
The Dogon are a West African people living mainly in central Mali, around the Bandiagara Escarpment, a sandstone cliff roughly 500 metres high that runs for about 150 kilometres across their homeland. Villages sit on the plateau above the cliff, against the cliff face and on the plain below it, and the whole area is a UNESCO World Heritage Site for both its landscape and its architecture.
Dogon religion centres on ancestors, masked dances, an elaborate creation story and a society of masks called the Awa. One of its best-known rituals is the Sigui, a ceremony held roughly every 60 years that commemorates the first ancestors and the coming of speech to humanity. The last Sigui moved from village to village between 1967 and 1973, and the next cycle is expected to begin in 2027. None of this is disputed. The dispute is about one specific strand of cosmology recorded by French researchers in the mid-twentieth century.
What Griaule and Dieterlen recorded
Marcel Griaule was a French anthropologist who led field missions to the Dogon from 1931 until his death in 1956, working closely with his colleague Germaine Dieterlen. His best-known book, Dieu d'eau (1948), published in English as Conversations with Ogotemmêli, is built on 33 days of conversations in late 1946 with Ogotemmêli, a blind elder and former hunter who described a detailed Dogon creation story.
The Sirius material came later. In 1950 Griaule and Dieterlen published "Un système soudanais de Sirius" in the Journal de la Société des Africanistes, and they expanded it in Le Renard pâle (1965). According to these accounts, certain Dogon initiates spoke of a star called po tolo, named after the fonio grain (po), the smallest seed farmed in the region. Po tolo was said to orbit Sirius in about 50 years, and to be at once the smallest of stars and the heaviest. The same accounts mention a further star in the system, emme ya tolo.
The creation story Griaule recorded also features the Nommo, ancestral spirits associated with water who were sent to Earth to restore order. In the ethnography they are mythological figures. In later popular books they became something else.
How does that compare with Sirius B?
On paper, the match with modern astronomy is close. Sirius, about 8.6 light years away, is the brightest star in the night sky. In 1844 the German astronomer Friedrich Wilhelm Bessel deduced from wobbles in Sirius's motion that it must have an unseen companion. On 31 January 1862 Alvan Graham Clark first saw that companion while testing a new 18.5-inch refracting telescope built for Dearborn Observatory.
Sirius B turned out to be a white dwarf. Its orbit around Sirius A takes about 50.1 years. Hubble measurements published in 2005 showed it is roughly the diameter of Earth yet holds about as much mass as the Sun, which makes it extraordinarily dense. Walter Adams's 1915 spectrum at Mount Wilson was the step that led astronomers to recognise it as a white dwarf, so by the 1920s the "small, heavy, 50-year" description was standard astronomy, though it can only be seen with a telescope.
That is the crux. If Dogon priests held this knowledge independently, it needs explaining. If it reached them from Europeans in the decades before Griaule wrote it down, it does not.
What Robert Temple argued in The Sirius Mystery
Robert Temple, an American-born writer living in Britain, published The Sirius Mystery in 1976. He took Griaule and Dieterlen's accounts at face value and argued that the Dogon could only have learned about Sirius B from intelligent beings who came from the Sirius system. He read the Nommo as amphibious visitors and traced what he saw as related traditions back through ancient Egypt and the wider Mediterranean and Near Eastern world, including Greek myth and the Epic of Gilgamesh.
The book became a cornerstone of ancient astronaut theory, next to Erich von Däniken and Zecharia Sitchin. Temple released a revised edition in 1998 under the subtitle New Scientific Evidence of Alien Contact 5,000 Years Ago. His Egyptian argument leaned on Sirius's central place in Egyptian religion, which is real, but which does not by itself say anything about a companion star.
The case against: Sagan, Ridpath and van Beek
The counter-case has three parts: the Dogon were not isolated, the description is not as precise as it looks, and later fieldwork could not find the tradition at all.
Carl Sagan addressed the claim in Broca's Brain (1979), in a chapter titled "White Dwarfs and Little Green Men." He did not dismiss the Dogon material out of hand. He pointed out that what was attributed to them matched European astronomy of the early twentieth century and nothing beyond it, which he took as a sign of a European source rather than an alien one, and suggested that a visitor interested in astronomy could easily have discussed Sirius with Dogon listeners who were already interested in the star. The astronomy writer Ian Ridpath argued along similar lines in the late 1970s, noting the ambiguities and contradictions in the accounts and the many channels through which outside knowledge could have arrived. Mission schools, colonial offices and French-language education were all present in the region by the early twentieth century. The writer James Oberg, who found the transmission explanation plausible, noted that the evidence for it is entirely circumstantial.
The most serious challenge came from inside anthropology. Walter E. A. van Beek, a Dutch anthropologist who had worked among the Dogon since the late 1970s, published "Dogon Restudied: A Field Evaluation of the Work of Marcel Griaule" in Current Anthropology in 1991. He reported that astronomy was not important in Dogon daily life or ritual, that informants disagreed about which star was meant by the names Griaule used, and that no one outside the circle of Griaule's informants had heard of the po tolo tradition. No one he spoke with described Sirius as a double star. The informants who did know the terms said they had learned them from Griaule.
Van Beek did not accuse Griaule of fraud. His argument was about method. Griaule worked through interpreters, questioned forcefully, and approached Dogon thought expecting a hidden, unified system, and van Beek suggested that informants responded to his questions by building on them, so that the published cosmology became a joint product of the researcher and his sources. Defenders of Griaule respond that the Sirius teaching was esoteric knowledge restricted to a few initiates, so a later researcher would not expect to find it widely known. Critics answer that a teaching restricted to Griaule's own informants is exactly what the contamination theory predicts.
Another proposal comes from the astrophysicist Noah Brosch, who has suggested that members of a French expedition that observed a solar eclipse in the region in 1893 could have discussed astronomy with local people. No record shows that they talked about Sirius, so it remains a possibility rather than an answer.
Sirius in ancient Egypt
The Egyptian part of the story is well documented, though it is a separate question. In Egypt the star was personified as the goddess Sopdet, known to the Greeks as Sothis, who was later identified with Isis. In antiquity the heliacal rising of Sirius, its first reappearance in the dawn sky after weeks hidden in the Sun's glare, fell around mid-July, just before the annual Nile flood that sustained Egyptian farming. That timing made Sirius a marker for the start of the agricultural year. For more on Isis and her family, see Egyptian gods and goddesses explained.
Nothing in surviving Egyptian texts describes a companion to Sirius, and Egyptologists do not read the Sopdet tradition as one. Temple's link between Egypt and the Dogon is his own interpretation, and it does not change what van Beek found.
Billy Carson's reading
Billy Carson treats the Dogon–Sirius account as one strand of a wider pattern of star-visitor contact. In the episode covered in the Anunnaki war in heaven article, he moves from the Enuma Elish and the Vedic vimanas to the Dogon of West Africa and the Nommo, whom he presents as visitors linked to Sirius B, remembered by the Dogon as beings from the sky. In his reading, the Nommo belong in the same category as the Mesopotamian Anunnaki: real beings from elsewhere who were taken for gods. That framework is set out in who were the Anunnaki and developed across the 4BK TV series Anunnaki: Ancient Secrets Revealed.
That is Carson's position. The fieldwork record points the other way: the Sirius B details come from Griaule and Dieterlen's accounts, and van Beek's restudy, the only systematic attempt to check them in the field, found no Dogon tradition of an invisible companion to Sirius. Readers weighing Carson's interpretation should weigh it against that finding, as well as against Sagan's point that the "knowledge" stops where European astronomy stood in the 1920s.
One naming note: Doctah B Sirius, who has appeared with Carson on the 4biddenknowledge Podcast and co-presented the Blueprint for Godpower events, is a person. His work with Carson is a separate subject from the star and from the Dogon debate.
Watch, read and go deeper
Start with Billy Carson's episode as summarised in the Anunnaki war in heaven article, which places the Dogon and the Nommo inside his larger story. The full series is on 4BK TV as Anunnaki: Ancient Secrets Revealed. For the wider debate about visitors in the deep past, read ancient astronaut theory explained, and for related articles browse the Anunnaki topic hub.
Frequently asked questions
Did the Dogon really know about Sirius B?
The claim comes from Marcel Griaule and Germaine Dieterlen's accounts of 1950 and 1965, not from independent records of Dogon belief. Walter van Beek's 1991 restudy found no Dogon tradition of Sirius as a double star, and the informants who knew the terms said they had learned them from Griaule. Most anthropologists and astronomers regard the claim as unsupported.
What is po tolo?
Po tolo is the name Griaule and Dieterlen reported for a star said to orbit Sirius. The name comes from po, the fonio grain, the smallest seed farmed in the region, and tolo, star. In their account it was tiny, extremely heavy and circled Sirius in about 50 years, which is why it has been identified with Sirius B.
Who are the Nommo?
In the Dogon creation story recorded by Griaule, the Nommo are ancestral spirits associated with water who were sent to restore order to the world. Robert Temple later described them as amphibious beings from the Sirius system. Billy Carson presents them as visitors linked to Sirius B, which is his interpretation rather than what the ethnography itself states.
When is the next Sigui ceremony?
The Sigui is held about every 60 years and travels from village to village over several years. The last cycle ran from 1967 to 1973, so the next is expected to begin around 2027.
When was Sirius B discovered?
Friedrich Wilhelm Bessel predicted an unseen companion to Sirius in 1844 from irregularities in the star's motion. Alvan Graham Clark first observed it on 31 January 1862 while testing an 18.5-inch refracting telescope. It was recognised as a white dwarf after Walter Adams obtained its spectrum in 1915.
Sources and further reading
- Marcel Griaule, Dieu d'eau: entretiens avec Ogotemmêli (1948), in English as Conversations with Ogotemmêli
- Marcel Griaule and Germaine Dieterlen, "Un système soudanais de Sirius," Journal de la Société des Africanistes (1950)
- Marcel Griaule and Germaine Dieterlen, Le Renard pâle (1965)
- Robert Temple, The Sirius Mystery (1976; revised 1998)
- Carl Sagan, Broca's Brain (1979), chapter "White Dwarfs and Little Green Men"
- Walter E. A. van Beek, "Dogon Restudied: A Field Evaluation of the Work of Marcel Griaule," Current Anthropology 32, no. 2 (1991)
- Noah Brosch, Sirius Matters (2008)
