Should we be searching for life on other planets, or technology?
Key Takeaways
- Our quest to find life on other planets is currently tuned to biosignatures. But this search is far from straightforward, and there is always the risk of false positives.
- The best scenario we can hope for is to find a complex biosphere that produces multiple lines of evidence pointing to life. But what if we focused instead on technosignatures — evidence of technological activity from advanced civilizations?
- If a planet hosts technologically advanced life, it stands to reason that it would also host less complex life forms, and we should expect to see both kinds of signatures.
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