Alien Spaceship Visits
Wendy and David discuss the possibility of intelligent life visiting Earth through unexplained sightings. While David remains skeptical, Wendy leaves the door slightly open for the idea of alien spacecraft visiting our planet.In this clip
From this podcast

Science Vs
UFOs: What the Government Covered Up
Related Questions
Can you imagine a scenario where aliens have visited Earth or are visiting Earth and we wouldn't notice it at all in the episode Neal Stephenson: Sci-Fi, Space, Aliens, AI, VR & the Future of Humanity | Lex Fridman Podcast #240 and the clip UFOs and Propulsion?
Are there similar episodes of the podcast that discuss aliens?