Minacce dallo spazio | Esplosioni pericolose: i Gamma Ray Bursts con Giancarlo Ghirlanda

Round-16 hunt: picked; source: named lecture-series search (r16 wave 5); channel screens (sellers/exam/re-upload/devotional/vendor/events), provenance check, vendor/seller/devotional recheck and quality tier A passed; strict per-title check + final strict pass; oEmbed verified.