Hoshi wo Tsugu Mono
Inherit the Stars
星を継ぐもの
Moon investigator found a dead body of a person wearing red space suit. And this corpse was about 50000 years old. What is a relation between modern humans. Also they found a space ship at Jupiter after a while, where space ship isn't made from earth...
Adaptation of James P. Hogan's science-fiction classic "Inherit the Stars".