2039-25: This chart shows, day by day, the point on the horizon where the moon set on the Paleolithical period. This coordinates match the tiny cupules, or cup marks, carved on the bone from "Abri Blanchard",
2039-26: Cro-Magnon, the first astronomer.
2039-27: Early Man was may be capable of making measurements of positions of stars, and to reproduce the exact positions of the constellations in the depths of the cave.
2039-28: Lascaux cave. Chantal Jègues-Wolkiewiez uses Astronomical software to prove her hypothesis.