Eight mind-expanding quests probe the universe's greatest unanswered mysteries.
Across eight adventures, this series explores some of the biggest mysteries in the universe through ambitious space science and discovery. From rockets built for deep space to exoplanets, Mars, and the origins of the cosmos, each episode opens a new frontier of ideas. Sign up to follow the questions that keep expanding our view of what is possible.
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Yes. Every plan unlocks the full library — including all Curiosity Originals like Secrets of the Universe — in up to 4K, ad-free, on all your devices.
Secrets of the Universe is a Curiosity Original, exclusive to Curiosity Stream. Plans start at $4.17/month.
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Curiosity Stream is our streaming service — thousands of documentaries and originals. The Smart Bundle is Curiosity Stream plus four other independent streaming services (Tastemade, Kidstream, Curiosity University, and SOMM TV) on a single subscription.