Geocentric model that both Venus and Mercury went around the Sun rather than the Earth, but this is no longer accepted. Martianus Capella definitely put Mercury and Venus in orbit around the Sun. Aristarchus of Samos was the most radical. He wrote a work, which has not survived, on heliocentrism, saying that the Sun was at the center of the universe, while the Earth and other planets revolved around it. His theory was not popular, and he had one named follower, Seleucus of Seleucia. In 1543, the geocentric system met its first serious challenge with the publication of Copernicus' "De revolutionibus orbium
Hottentot (racial term) "hodmandod" in the years around 1700. The reduced Afrikaans/Dutch form "hotnot" has also been borrowed into South African English as an offensive term for black people. In seventeenth-century Dutch, "Hottentot" was at times used to denote all black people (synonymously with "Kaffir"), but at least some speakers were careful to use the term "Hottentot" to denote what they thought of as a race distinct from the supposedly darker-skinned "Kaffirs". This distinction between the non-Bantu "Cape Blacks" and the Bantu was noted as early as 1684 by French anthropologist François Bernier. The idea that "Hottentot" referred strictly to the non-Bantu peoples