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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.

Could sending a quantum twin across the galaxy make you both old and young at the same time?
It's possible that an event horizon is forming right behind and you won't know until its too late.
Are there no alien signals to find... or do we need to update how we search for them?
Tai Leclaire breaks down the Declaration of Independence, Uncle Sam and the meaning of July 4th.
Traditional Polish Christmas Markets and Traditions in Kraków, Gdańsk & Wrocław.
The mystery of what non-flying dinosaurs were doing with their feathered wings has a new hypothesis.
What did ancient people once know about these bizarre megafauna that we’ve since forgotten?
I tried to improve pykrete for months, then tossed it off a building.
5,700 years ago, woolly mammoths crossed a remote tundra island off Alaska.