In the Kon-Tiki Museum in Oslo, a simple yet iconic artifact has stood still since 1950: a wooden raft made of nine balsa logs tied together with hemp ropes, without a single bolt or nail. This rudimentary vessel, known as the Kon-Tiki, was the brainchild of Norwegian explorer Thor Heyerdahl. In 1947, Heyerdahl and four companions set out from the port of Callao, Peru, on a 101-day journey across the Pacific Ocean. Their goal was to prove that Polynesians might have originated from South America. The raft, propelled only by the Humboldt current and trade winds, traveled approximately 6,900 kilometers before landing on the atoll of Raroia in the Tuamotus on August 7, 1947. Though the journey was a physical and navigational triumph, it did not convince the scientific community of Heyerdahl’s theory. Heyerdahl’s interest in the idea began in 1937, during a honeymoon trip to the Marquesas Islands in French Polynesia. He became fascinated by local legends about ancestors coming from the east and noticed the presence of crops like sweet potatoes and gourds, which are native to the Americas, in Polynesian archaeological sites. This led him to believe that Polynesians might have had contact with South America, a theory he sought to test through firsthand experience. However, the scientific consensus before and after the expedition remained skeptical, favoring the idea that Polynesians originated from Asia, supported by evidence from linguistics, archaeology, and later, genetics. In 2020, a genetic study published in Nature reignited the debate. Led by geneticist Alexander Ioannidis, the research found evidence of contact between Polynesians and an indigenous group in Colombia, the Zenu, between the years 1150 and 1230. This contact, however, was not in the direction Heyerdahl proposed—Polynesians may have reached South America, not the other way around. This discovery confirmed a connection between the two regions but did not support Heyerdahl’s original hypothesis about South American influence on Polynesia. The Kon-Tiki remains a central exhibit at the Kon-Tiki Museum in Oslo, which opened in 1950 and has since attracted nearly 20 million visitors. The museum has undergone renovations, including a major overhaul in 2025-2026, and features a recreated marine environment beneath the raft, offering a glimpse into the ocean journey that made Heyerdahl famous. The museum also houses another of Heyerdahl’s rafts, Ra II, which he used to demonstrate the possibility of an ancient Atlantic crossing. While the Kon-Tiki’s journey was a physical marvel, the final word on the origins of Polynesians continues to rest with linguists and archaeologists, rather than with the navigators who once set out to challenge the accepted wisdom.