Ancient Aliens: Special Presentation: Temporada 2, Episódio 3

2 - 3: Interstellar Fallout

Meteor impacts, cosmic microbes, and space viruses have significantly impacted life as we know it. Recent discoveries suggest that some of the debris falling to Earth could have originated from other star systems and may even be of artificial origin. If so, might this point to ongoing extraterrestrial involvement with our planet, as Ancient Astronaut theorists suggest?