Oberg points out a number of errors contained in the Dogon beliefs, including the number of moons possessed by Jupiter, that Saturn was the furthest planet from the sun, and the only planet with rings. Intrigued of other seemingly falsifiable claims, namely concerning a red dwarf star orbiting around Sirius (not hypothesized until the 1950s) led him to entertain a previous challenge by Temple, asserting that "Temple offered another line of reasoning. 'We have in the Dogon information a predictive mechanism which it is our duty to test, regardless of our preconceptions.' One example: 'If a Sirius-C is ever discovered and found to be a red dwarf, I will conclude that the Dogon information has been fully validated.'