Sidera Cosmos

Astronomy and space documentaries, narrated in Spanish, with English subtitles.

SIDERA — Stories from the universe. Black holes, galaxies, exoplanets, the origin and fate of the cosmos: rigorous science told as a story. New documentaries every Tuesday and Saturday.

This is how Sidera is made: every script is handcrafted, and every fact is checked against primary sources: NASA, ESA, and scientific publications. We use real photos and footage from NASA and other space agencies first, credited in every description, and only recreate with AI what no camera has ever seen. The narration is a synthetic voice we direct line by line. Everything else is human: the judgment, the decisions, and the love for what we do. And we read every comment.

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