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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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BBC 4
The Sky At Night
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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 ...
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BBC 4
The Sky At Night
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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 ...
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BBC 4
The Sky At Night
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BBC 4
The Sky At Night
Ancestral Skies
This month, The Sky at Night teams up with BBC Ideas to discover the secrets of archaeology and astronomy and to reflect on our ancestral skies. \n\nThroughout history and acros ...
14-11-2024
BBC 4
The Sky At Night
Question Time Special
Get ready for The Sky at Night’s annual Question Time Special, where viewers get the opportunity to ask the questions they have always wanted answered about our universe.\ ...
08-10-2024
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The Sky At Night
2075: Our Place In Space
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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
Webb Telescope: The Story So Far
In July 2022, the James Webb Space Telescope released its first images. They were visually stunning, and it was clear they provided more detail of stars, galaxies and planets th ...
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BBC 4
The Sky At Night
Cosmic Ghosts
This month, The Sky at Night has a spooky twist. Across the universe, there are hidden objects that we can’t see, but astronomers and scientists still believe they’r ...
13-06-2024
BBC 4
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The Sky At Night
Guides: 3. Stars
For as long as humans have walked the Earth, the stars have fascinated us. But we have come a long way since the earliest days of astronomy when we had nothing but our eyes to o ...
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BBC 4
The Sky At Night
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BBC 4
The Sky At Night
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BBC 4
The Sky At Night
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A special ‘Question Time’ edition of the programme, recorded at The Venue in De Montford University, Leicester, as part of the British Science Association’s an ...
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BBC 4
The Sky At Night
2075: Our Place In Space
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The Sky At Night
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BBC 4
