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Are There Lost Alien Civilizations in Our Past?

Kurzgesagt – In a Nutshell · explainer · Watch on YouTube

Geology & earth scienceCosmology & astrophysics

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.

Why Hacker News recommends it

HN brings it up in threads on ancient civilizations and detecting past technology in geology.

  • 1 people recommended it
  • 1 different months
  • 0 strong recommendations
  • first 2023, last 2024

What HN commenters said

  1. “I enjoyed Kurzgesagt's video [0] about our ability to sense ancient aliens.”

    Video about our ability to sense ancient aliens.

    Nzen, 2024-01 · Recommendation · in “Pushing It Back”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: silurian hypothesis, geological record, fermi paradox, kurzgesagt

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