Explore the cutting edge of human achievement. Journey to the deepest reaches of space. Dive into the mysterious physics of quantum realms. Fly with astronauts into hostile extraterrestrial realms.

Cosmic Journeys

S1, EP2 "Attack of the Sun"

Scientists probe the sun to learn more about coronal mass ejections, violent periodic outbursts that disrupt Earth's electrical systems.

Infinity

"Everything or Nothing?"

Asking the question of whether the universe is indeed infinite or finite; perhaps there are an infinite number of other universes, possibly existing in different dimensions.

Infinity

"The Scale of Things"

Whilst the size of the universe is still unknown, it looks very likely that the universe is infinite; looking at the possibility of infinity in both directions, from the infinitely large to the infinitely small.

Infinity

"The Beginning?"

It is thought that the big bang was the beginning of space, matter and time, and that all space and matter were created from absolutely nothing; new understanding suggests that this might not be the case.

Secrets of Size: Atoms to Supergalaxies

S1, EP1 "Going Small"

Jim Al-Khalili looks at the universe across its vast range of size, ranging from the tiniest objects measuring just a few atoms, to vast structures consisting of hundreds of thousands of interconnected galaxies.

Secrets of Size: Atoms to Supergalaxies

S1, EP2 "Going Big"

From out world to the edges of space, Jim Al-Khalili explores the vastness of the cosmos.

Hubble's Enduring Legacy

A look back at the Hubble Space Telescope's major accomplishments since its launch in April 1990.

The Age of Hubble

An army of high-tech telescopes, led by Hubble in space, has delivered an unprecedented chain of discoveries about how galaxies took shape, how stars live and die, and how life arose.

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