Are There Lost Alien Civilizations in Our Past?
Why Hacker News recommends it
HN brings it up in threads on ancient civilizations and detecting past technology in geology.
What it is
Kurzgesagt asks whether advanced civilizations could have existed on Earth in the deep past and left little evidence. It looks at time as a dimension for searching for alien civilizations and the limits of the geological record.
Recommended by 1 HN commenters across 1 different months, 2023 to 2024.
What Hacker News said
Recommends Nzen · 2024-01 · on “Pushing It Back”
Along the same lines as the pbs video, I enjoyed Kurzgesagt's video [0] about our ability to sense ancient aliens. [0] [this video] 12 minutes
Cites robbomacrae · 2023-12 · on “Would it be possible to detect an industrial civilization in geological record?”
Kurzgesagt also: [this video] And just like the paper, it acknowledges the challenges in detecting such evidence due to the limited and complex nature of the geological record.
Cites berniedurfee · 2024-05 · on “New findings point to an Earth-like environment on ancient Mars”
Kurzgesagt did a video on this. Though they discuss how advanced civilizations could have existed on Earth and we might not even know it because there wouldn’t be much left and what was left might be so unusual that we might chalk it up to natural phenomena. [this video]