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The Bright Night Skyep2
What were the Universe's dark ages?
Dr Emma ChapmanDr Emma ChapmanHD, subtitles, Q&ATranscript41m
400 million years after the Big Bang, the Universe was very different from what it appears today. At that time (around 13 billion years ago) the universe was dark and empty. But how can we know that? Is there a way to travel back in time?

400 million years after the Big Bang the Universe was very different from what it appears today. In fact, at that time, around 13 billion years ago, the universe appeared dark and empty as it slowly expanded. Suddenly the first stars formed, lighting up the Universe and forming the galaxies we see today.

That era has never been observed and constitutes over a billion-year gap in our knowledge – equivalent to missing everything from birth to entry to school. It is a time full of exotic astrophysics such as stars one hundred times the mass of our Sun, dark matter and baby black holes. But these first objects gave out heat and light, leaving traces that we can finally observe for the first time using radio telescopes.

Join award-winning physicist Emma Chapman as she takes us on a journey through the dark ages of our universe and draws a picture of what we know about this mysterious period of our existence.

How did the universe come to be and why are the dark ages of the universe so important for us to understand?

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HD, subtitles, Q&ATranscript

The Bright Night Sky

For centuries, we have been looking up to the sky to understand the mysteries that surround us. The sky might hold the answers to some of our deepest questions such as where we came from. But what do we know so far?

4 talks
Interactive Q&A
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Will we ever manage to capture the light from the very first stars that appeared in the universe? Would it be possible that the universe is expanding at a speed faster than light and so we will never be able to see those first stars?
5 votes
Is it possible to find the centre of the universe, where everything started from, and point our telescope at that specific point?
4 votes

That was such a brilliant talk! Physics has never been so interesting!Julia
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