New evidence for UAP-related data has emerged from high-sigma detections of transients that vanish in Earth’s shadow, raising compelling questions about their origin. In this episode of Event Horizon, John Michael Godier speaks with Dr. Beatriz Villarroel, lead scientist of the VASCO Project, about the search for stars and objects that mysteriously disappear from the night sky. They explore the project’s most intriguing discoveries, including multiple transients of unknown origin, the role of citizen scientists, and the profound implications these anomalies may hold for our understanding of the universe.Dr. Beatriz Villarroel is an astronomer in Stockholm and the lead scientist of the Vanishing & Appearing Sources during a Century of Observations (VASCO) project. VASCO uses automated methods and citizen science to search for stars that have mysteriously disappeared from archival sky surveys, uncovering anomalous “multiple transients” of unknown origin. Her work has earned international recognition, including the L’Oreal-UNESCO For Women in Science award and a TEDx talk on the search for alien artifacts."On the Image Profiles of Transients in the Palomar SkySurvey" Villaroel et al, 2025https://arxiv.org/pdf/2507.15896"Aligned, multiple-transient events in the First Palomar Sky Survey" Villaroel et al, 2025https://www.researchgate.net/publication/394040040_Aligned_multiple-transient_events_in_the_First_Palomar_Sky_Survey"A Cost-Effective Search for Extraterrestrial Probes in the Solar System " Villaroel et al, 2025 https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/staf1158/8221885?utm_source=advanceaccess&utm_campaign=mnras&utm_medium=email&login=false"Some Transients in the Palomar Observatory Sky Survey (POSS-I) May Be Associated with Above-Ground Nuclear Testing and Reports of Unidentified Anomalous Phenomena", Bruehl et al, 2025https://www.researchsquare.com/article/rs-6347224/v10:00 Introduction to Dr. Beatriz Villarroel and the VASCO Project3:45 What Is the Vanishing & Appearing Sources Project?7:18 Searching a Century of Sky Surveys for Missing Stars10:42 The Mystery of Multiple Transients14:56 How Citizen Scientists Are Helping the Hunt18:32 Are These Transients Evidence of Technology?22:15 Investigating Alternative Explanations27:04 How Archival Data Can Reveal New Anomalies31:29 When Did These Transients First Appear?35:14 The Role of Automated Analysis in VASCO38:40 Could These Signals Be From Alien Probes?42:56 Cross-Checking with Modern Telescopes47:21 Public Reaction to the Discoveries50:44 Lessons Learned from a Decade of VASCO Research54:32 What’s Next for the Search for Vanishing StarsYouTube Membership: https://www.youtube.com/channel/UCz3qvETKooktNgCvvheuQDw/joinPodcast: hhttps://creators.spotify.com/pod/show/john-michael-godier/subscribeApple: https://apple.co/3CS7rjTMore JMG https://www.youtube.com/c/JohnMichaelGodierWant to support the channel?Patreon: https://www.patreon.com/EventHorizonShowFollow us at other places!@JMGEventHorizonMusic:https://stellardrone.bandcamp.com/https://migueljohnson.bandcamp.com/https://leerosevere.bandcamp.com/https://aeriumambient.bandcamp.com/FOOTAGE:NASAESA/HubbleESO - M.KornmesserESO - L.CalcadaESO - Jose Francisco Salgado (josefrancisco.org)NAOJUniversity of WarwickGoddard Visualization StudioLangley Research CenterPixabay