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The Universe Has Been Expanding Since the Big Bang. Just Not How We Thought.
Season 11
Episode 32
17:40
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PBS Space Time
We’ve Been Looking for Aliens for 70 Years. We've Been Doing It Wrong All Along
Season 11
Episode 29
We’ve been looking for messages from the stars ever since Frank Drake pointed the Green Bank radio telescope at Tau Ceti and Epsilon Eridany 65 years ago. He saw nothing that couldn’t be explained by natural causes. Nor have the much more extensive SETI surveys conducted since. So, maybe there are no alien signals to see. Or maybe we need to update how we search for them.
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18:42
Gravitons, the particle of quantum gravity, may be impossible to detect.
25:02
2025 was the international year of quantum science, but today we examine its origins.
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We’ve found lots of “habitable” worlds but we don’t know what factors are needed for life.
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Antimatter drives sound like science fiction, but they may not be as far as you think.
23:22
Does quantum mechanics allow the future to retroactively influence the past or not?
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Life on mars could result in humanity’s destruction via Fermi Paradox.
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How to build a particle collider the size of the solar system.
12:39
One of the most important reasons we go to space is to know our own planet better.
16:18
Is there evidence for the existence of an enormous number of other universes?
18:56
It may be that our very DNA inherited its twist from the underlying handedness of reality.