Alien visited us in the middle ages / medieval paintings revealed

There are even cave paintings in France and elsewhere, the astronauts show in your space suit or even just very primitive natives who know about the Sirius system know and even know the Sirius B, however, was not discovered until quite late, she him, but before that knew her. Here we will probably have to ask who these people (the Dogon) has whispered. They do not know astronomy and are under the general term as "savages" classified. For the Aborigines, there are also paintings, know to report the same things.