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04.06.21
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Black holes warp space and time, squeeze matter to a vanishing point, and trap light so that it cannot escape. Black holes, with masses millions or billions times that of our...
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8 videos
1:20:19
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Visit the ‘dark side’ of the universe. Black holes cannot be seen because gravity is so strong that not even light can escape. Dark matter cannot be seen because...
9 videos
1:30:38
Dark energy, the repulsive energy of empty space, was one of the most unexpected and astonishing discoveries in recent science. Most scientists had expected that the...
5 videos
57:21
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The expanding universe is humanity’s monumental discovery. Beginning infinitesimally small, the universe has become majestically large. How could this happen? What...
7 videos
1:07:48
What to make of an expanding universe? For one thing, roll the ‘movie’ in reverse and we have all the matter concentrated in what seems to be a single point,...
3 videos
30:25
The early universe was a superhot plasma of particles all running seemingly at random as if in a gigantic cauldron. How then the structure we see today with galaxies, stars,...
1:08:19
Do stars and spaces go on forever? Do the numbers of galaxies, and even of universes, have no end? Is our universe infinite in size and contents? Are there an infinite number...
6 videos
44:12
The size of the cosmos has been growing, in more ways than one. Our universe is expanding. Multiple universes, an immense number of them, are likely being generated...
50:29
Galaxies and clusters of galaxies, untold billions of them, adorn the cosmos. How did such large-scale structure of the universe come about? The universe started as a hot...
1:09:38