Tabby's Star: False Positive Investigation

Penn State astronomer Jason Wright discusses Dyson sphere detection, why building one in 50 years is physically impossible, and the search for alien technosignatures across 100,000 galaxies. Bio:

Jason T. Wright is a professor of astronomy and astrophysics at Penn State University and director of the Penn State Extraterrestrial Intelligence (PSETI) Center . His research focuses on the search for alien technosignatures – especially the telltale waste heat from hypothetical Dyson spheres (megastructures built around stars to capture their energy). Wright led pioneering surveys using NASA’s WISE space telescope to hunt for mid-infrared excess emission from Dyson sphere-like structures . He is also known for his work on peculiar astronomical objects such as “Tabby’s Star,” helping show its strange dimming was due to dust rather than an “alien megastructure” . In addition to SETI, Wright studies exoplanets and stellar astrophysics, and he has been a vocal advocate for integrating technosignature searches into mainstream astronomy . - FOLLOW ON X: @8teAPi (Ate) @Astro_Wright (Jason) @TurpentineMedia -- LINKS: Website: https://sites.psu.edu/astrowright/ -- TIMESTAMPS: (00:00) Intro (03:26) What is a Dyson Sphere? Freeman Dyson's Original Concept (04:59) Detecting Dyson Spheres Through Infrared Emissions (07:00) WISE Satellite Survey Results: 100,000 Galaxies Searched (15:00) Computing in Space: Thermal Management and Why Running Hot is Better (21:22) Hiding Techno Signatures from Hostile Species (24:00) Radio Telescopes vs Infrared Detection (SETI Methods) (27:06) Dismantling Jupiter: Mass Requirements for Dyson Spheres (33:44) Organic Growth: How Dyson Spheres Would Actually Develop (35:00) Asteroid Mining and Obtaining Mass Outside Earth (40:23) Technology Trees: What's Needed Before Building Dyson Spheres (41:00) Self-Replicating Machines: The Critical Missing Technology (43:50) Physics vs Engineering: Why 50 Years is Literally Impossible (48:03) Other Space Megastructures and Energy Collection (50:28) Tabby's Star: The Alien Megastructure That Wasn't (54:52) Decision Tree for Verifying Techno Signatures (57:33) Starship's Potential Impact on Future Space Telescopes (1:04:34) Moon-Based Telescopes and the Far Side Radio Opportunity (1:10:28) Rise of Chinese Astronomy Research (1:12:15) Starlink's Devastating Impact on Ground-Based Astronomy (1:15:42) Space Law, Treaties, and International Cooperation (1:18:33) Machine Learning and Data Science in Modern Astronomy (1:21:11) Future Research Priorities: Petascale Data and All-Sky Surveys (1:24:59) Wrap