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PBS Space Time
How The Penrose Singularity Theorem Predicts The End
This is how the Penrose Singularity Theorem Predicts The End of Space Time.
How We Know The Earth Is Ancient
PBS Space Time explores the outer reaches of space, the craziness of astrophysics, the possibilities of sci-fi, and anything else you can think of beyond Planet Earth. Host Matt O'Dowd breaks down both the basic and incredibly complex sides of space and time.
How We Know The Earth Is Ancient
Season 6 Episode 11 | 13m 38s | CC
In astronomy we talk about billions of years like it’s no big deal. But how can we be sure about timescales so far beyond the capacity for human intuition? Our discovery of what we now call deep time is very recent - as recent as our discovery of the true spatial vastness of our universe. And it came as scientists tried to measure the age of the Earth. What they found was shocking and humbling.
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