Antimateria, Materia Oscura y Energía Oscura - Beatriz Gato Rivera

Round-12 hunt: picked; channel-level screens (sellers/exam/re-upload/devotional/vendor/events), provenance check, vendor/seller/devotional recheck and quality ranking (tier A) passed; strict per-title check + final strict pass; oEmbed verified.

A 69-minute video from IFF - CSIC: “Antimateria, Materia Oscura y Energía Oscura - Beatriz Gato Rivera”.

Video by IFF - CSIC, played through YouTube's embedded player.