Science Friday Science Friday

Examining a new lunar crater + searching for signs of alien technology

Sep 30, 2026 · 18m

Summary

Planetary scientist Dr. Tyler Powell discusses a rare, newly formed 220-meter lunar crater from 2024, explaining how thermal imaging reveals how impacts fluff up the surface regolith. The episode then shifts to Dr. Sophia Schaefer, who explores "techno signatures," such as artificial dust and radio signals, that could reveal past extraterrestrial civilizations. She details how advanced technology might leave detectable traces on the Moon or in space, highlighting the potential for finding evidence of galaxy-spanning societies.

Topics discussed

Sponsors and introduction Discovery of a new lunar crater Interview with Dr. Tyler Powell Crater size and rarity Studying pristine craters at time zero Thermal properties and regolith fluffiness Implications for planetary science Relevance for lunar exploration and Apollo 16 Sponsors and transition to alien technology Interview with Dr. Sophia Schaeck Looking for techno-signatures in lunar dust Persistence of artifacts on the Moon Probability of finding alien debris Advantages of radio signals for SETI Identifying artificial radio signals Advancements in search technology Other types of techno-signatures Detectability of Earth from space Imagining future technologies Conclusion and final sponsors
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