TV show availability guide

Secrets of Size: Atoms to Supergalaxies

In this mind-bending series, Jim Al-Khalili explores the vast range of size in the universe, from tiny atoms to gigantic, interconnected galaxies.

2022 7.7/10 community score 1 season · 2 episodes Returning Series
  • Documentary

Viewing market

Country-level availability

Where to watch in United States

4 platforms currently listed across all viewing options

Data checked 25 Oct 2026, 11:10 UTC

Included with subscription

2
  • Streaming providerMagellan TVNo linked platform guide yetDetails unavailable
  • Streaming providerXive TV Documentaries Amazon ChannelNo linked platform guide yetDetails unavailable

Free with ads

2
  • Streaming providerThe Roku ChannelNo linked platform guide yetDetails unavailable

Series schedule

Seasons and episode dates

A concise series timeline, including the latest aired episode and the next date currently listed.

View TV calendar
First aired
Seasons
1
Episodes
2
Status
Returning Series

Latest aired episode

S1 E2

Going Big

Aired 59 min

In the concluding episode of the series, Jim encounters ever larger cosmic structures to reveal the latest breakthroughs in our understanding of the universe. For example, there's the heliosphere, a vast cloud of solar plasma that surrounds and protects the solar system. Its unique physics help us understand why life is possible. Larger still, Jim comes face to face with our galactic home the Milky Way, a monstrous structure sculpted by the gravitational forces of dark matter. Jim finds out from pioneering researcher Adrian Fabian about the black hole at its centre, whose strange behaviour includes emitting the lowest note that can be heard in the cosmos.

Next listed episode

No upcoming episode date is currently listed.

Season guide

Most recent seasons first

1 season entry

  • Season 1

    2 episodes

    First episode aired

About these dates: Air dates describe the series schedule and may change. They do not confirm that an episode is available on the same date from the providers listed above.

Reader conversation

Community discussion

Share viewing experiences, useful context or corrections. Comments are hosted by Disqus and load only after you choose to open them.