Two planetary scientists and an astrophysicist make the case that the search for life in other parts of our universe has been made all the more valid by two recent...
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Roundtable
26:24
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To most physicists, mindless laws generated the universe. A few believe that a supreme being is the creator. But don’t the discoveries of cosmology eliminate the need for...
Episode
Episode 05
Season 18
26:48
Lots of things exist. But what is so absolutely fundamental in that it cannot be further reduced into anything more fundamental, but other things that exist can be reduced to...
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Topic Series
5 videos
41:10
Multiple universes used to be pure speculation. Today, most cosmologists are sure they exist, perhaps in many forms and almost certainly in vast numbers, perhaps infinite in...
7 videos
1:54
Galaxies and clusters of galaxies, untold billions of them, adorn the cosmos. How did such large-scale structure of the universe come about?
Episode 02
Season 06
26:46
We look around and see innumerable things and to each we give a separate name. But most things are composites, made up of smaller, more fundamental things. So digging down to...
6 videos
49:25
Great art is transcendent. Its impact reaches far beyond the art itself and the person who created it. Art can help us perceive reality in new ways and give new meaning to...
43:12
The very early universe likely underwent a period of enormous expansion called “inflation.” This revolutionary theory stunned cosmology. It solved knotty problems...
1:01:26
Why is there a world, a cosmos, something, anything instead of absolutely nothing at all? If nothing existed, there would be, well, ‘nothing’ to explain. To have...
40:00
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Cosmologists believe that multiple universes really exist; they call the whole vast collection, which might even be infinite in number, the ‘multiverse’. But how...
1:06:48
Why does alien intelligence hold such fascination? Can we even conceive of what they might be like? To appreciate intelligent, sentient life in the universe, right now we...
10 videos
1:15:11