How Small Is the Universe?

Horizon plunges down the biggest rabbit-hole in history in search of the smallest thing in the Universe. It is a journey where things don't just become smaller but also a whole lot weirder. Scientists hope to catch a glimpse of miniature black holes, multiple dimensions and even parallel Universes. As they start to explore this wonderland, where nothing is quite what it seems, they may have to rewrite the fundamental laws of time and space.

Where to watch

You cover 0/1174 episodes +1174 with the plan · 100%

Your services

With the plan

Not covered

PBS Add

Free

1174/1174

Watch

Every episode is already streaming. You only need about a month to binge it.

Add PBS

Jul Aug Sep Oct Nov

Subscribe ~1 month · binge all 1174 episodes, then cancel

See your month-by-month plan → Track