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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
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The Sky At Night
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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 ...
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Most popular episodes of The Sky at Night
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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 ...
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BBC 4
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The Sky At Night
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The Sky At Night
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 kn ...
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BBC 4
The Sky At Night
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The team explores the vast frozen worlds of Uranus and Neptune, while astro-photographer Damian Peach shares his tips for capturing these jewels of the night sky.
12-10-2014
BBC 4