The Dominant Force in the Universe

25 May 2012

When did Dark Energy become the dominant force in the universe? In this month's Naked Astronomy, we look back at the history of our expanding universe to find out when gravity lost its grip. We also examine the global trade in meteorites to explore the tension between scientists and collectors. Plus, we answer a bumper crop of your questions.

In this episode

01:32 - Losing Gas in Galaxy Evolution

Losing Gas in Galaxy Evolution

05:13 - Fomalhaut's Cometary Debris Disk

Fomalhaut's Cometary Debris Disk

09:11 - Keeping Kepler

Keeping Kepler

12:46 - Could we detect evidence of civilisation on the night side of a transiting planet?

Could we detect evidence of civilisation on the night side of a transiting planet?

16:30 - How long has Earth been habitable?

How long has Earth been habitable?

19:27 - When Dark Energy Took Over

When Dark Energy Took Over
with Prof. Will Percival and Dr Rita Tojero, University of Portsmouth

28:07 - Could Dark Matter be interfering with our measurement of G?

Could Dark Matter be interfering with our measurement of G?

32:12 - Is the solar system expanding?

Is the solar system expanding?

34:15 - Are there limits to what we can understand about the universe?

Are there limits to what we can understand about the universe?

37:36 - The International Meteorite Market

The International Meteorite Market
with Audrey Tempelsman

45:16 - How does the sun produce photons?

How does the sun produce photons?

47:17 - Are some galaxies moving so fast as to be invisible?

Are some galaxies moving so fast as to be invisible?

49:39 - Could a new big bang happen in the universe?

Could a new big bang happen in the universe?

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