From Earth-sized arrays to giant mirrors, telescopes reveal the unseeable.
See how ever more powerful telescopes transformed astronomy, from proving black holes could be imaged to tracing clues toward a possible lost planet. This episode connects iconic instruments, bold engineering, and the discoveries they made, giving you a sharper view of how humanity pushes deeper into the universe. Sign up to watch the breakthroughs unfold.
Love Telescopes: The Truth is Out There? It’s just the start.
Join now to unlock the whole library — thousands of award-winning documentaries beyond Telescopes: The Truth is Out There, from the deep ocean to deep space.
Trending Now
- New shows weeklyFresh documentaries land every week.
- Exclusive originalsAward-winning films you can’t stream anywhere else.
- Watch anywherePhone, tablet, web and TV — pick up where you left off.
- No commitmentNo contract. Cancel in a click.
Pick the plan that’s right for you.
Flexible plans, no contracts.
Thousands of documentaries across nature, history, space, and science.
- Watch in 4K on all your devices
- Download and watch offline
- Stream ad-free — cancel anytime
Thousands of documentaries across nature, history, space, and science.
- Up to 4K
- Offline downloads
- Ad-free
Frequently asked questions
Thousands of the world's best documentaries and factual programming — nature, history, science, technology, and biography — including exclusive Curiosity Originals like Telescopes: The Truth is Out There. Stream it all ad-free, anytime.
Telescopes: The Truth is Out There streams with every plan. Plans start at $4.17/month.
Watch on the web, iOS and Android, Roku, Apple TV, Amazon Fire TV, Chromecast, Android TV, and most smart TVs. Start on one device and pick up right where you left off on another.
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.