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The Invisible Universe
The Sky at Night reports on one of the most unnerving discoveries in space science - that most of the universe is missing.\n\nWe live in a material world, so instinctively we know what normal matter is - the world around us, the planets, stars and interstellar dust. But scientists currently estimate that 95 per cent of everything in the universe is actually - one way or another - invisible. Some of this is ordinary matter that we just can't easily see. But there's also stuff that's much more weird. For instance, there's a new kind of matter we think is out there, but whose very existence is still largely hypothetical - dark matter.\n\nAnd most mysteriously of all, scientists think there is an unknown form of energy pervading the universe that we know so little about, all it has so far is a name - dark energy.\n\nThe Sky at Night takes you on a tour of this invisible universe, and shows how its existence - or lack of it - will define the fate of the entire universe.
Source: BBC 4
Most recent episodes of The Sky at Night
The Sky At Night
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08-06-2026
BBC 4
The Sky At Night
Jodrell Bank: Tuning Into The Universe
It started 80 years ago with a field, army surplus, wartime radar and a visionary idea - and it changed how we see the universe forever. In this episode, we step inside the rema ...
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BBC 4
The Sky At Night
Destination Moon
Maggie Aderin, self-proclaimed lunar-tic, examines Nasa’s Artemis II mission: the first crewed journey towards the moon in more than 50 years. It’s a mission designe ...
14-04-2026
BBC 4
The Sky At Night
Space Mysteries: The Sky At Night Meets Curious Cases
Do aliens exist, and can we talk to them? What does a black hole sound like? Does the universe look like a doughnut? In a spectacular season finale, The Sky at Night teams up wi ...
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The Sky At Night
Brits In Space
Three, two, one, lift off! This edition launches into the extraordinary - and extraterrestrial - world of astronaut training, discovering what it truly takes to become a Europea ...
15-10-2025
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The Sky At Night
The Expanding Universe
The team explores one of the greatest discoveries of modern astronomy - that our universe is expanding - and the new questions it raises about how the cosmos works.\n\nIn the 19 ...
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BBC 4
The Sky At Night
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Dame Jocelyn Bell Burnell is a discoverer and an explorer of the distant cosmos, and she has walked among the stars. She discovered the first pulsar in 1967 - a discovery so imp ...
14-08-2025
BBC 4
The Sky At Night
Exoplanets - Strange New Worlds
The team go on a cosmic adventure, exploring one of the newest areas of modern astronomy – the search for exoplanets, the distant bodies that orbit stars beyond our own so ...
16-07-2025
BBC 4
The Sky At Night
Greenwich: A Journey Through Space And Time
To celebrate the 350th anniversary of the Royal Observatory, the team recreate history. \n\nIn the times of the early Astronomers Royal, scientists would gather at spectacular d ...
12-06-2025
BBC 4
The Sky At Night
Secrets Of The Red Planet
Could life have once thrived on Mars? What mysterious force is moving large boulders across its dusty surface today? And will a return trip to our neighbouring planet ever be po ...
15-05-2025
BBC 4
Most popular episodes of The Sky at Night
The Sky At Night
Question Time Special
A special Question Time edition of the programme, recorded at the University of Exeter as part of the British Science Association’s Science Festival.\n\nThe panel is chair ...
12-10-2023
BBC 4
The Sky At Night
Space Weather: The Perfect Storm
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The Sky At Night
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The Sky At Night
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11-09-2024
BBC 4
The Sky At Night
Nicky, Nasa And The Next Frontier
In this Sky at Night special, the team talk to Dr Nicola Fox, NASA’s head of science, whose life began in the UK.\n\nPresenter Chris Lintott chats to Nicky about her early ...
15-08-2024
BBC 4
The Sky At Night
Death Star
One evening in early September 1859, a spectacular blood-red aurora borealis appeared across America. Earlier that same day, in a leafy garden in the UK, a gentleman astronomer ...
16-08-2018
BBC 4
The Sky At Night
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The Sky at Night in the Multiverse of Mystery is a magical journey into the far-flung ideas at the very edge of scientific knowledge, exploring the concepts that today seem like ...
17-11-2022
BBC 4