Science and Nature

PBS Space Time

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.

Does Infinity - Infinity = an Electron

15m 35s

What do you get if you take something that’s infinitely massive and combining with something else that’s negative infinitely massive? You get a single electron, at least that’s what it looks like in our most precise way of describing the quantum world.

Episodes

  • Dark Forest: Should We Not Contact Aliens?: asset-mezzanine-16x9

    Dark Forest: Should We Not Contact Aliens?

    S10 E3 - 14m 12s

    In 1974 we sent the Arecibo radio message towards Messier 13. The message was mostly symbolic; we weren’t really expecting a reply. Yet surely other civilisations out there are doing the same thing. So, why haven’t we heard anything? What if the silence from the stars is a hint that we shouldn’t be so outgoing? What if aliens are deliberately keeping quiet for fear that they might be destroyed?

  • What Happens If We Nuke Space?: asset-mezzanine-16x9

    What Happens If We Nuke Space?

    S10 E2 - 15m 13s

    EMPs aren’t science fiction. Real militaries are experimenting on real EMP generators, and as Starfish Prime showed us, space nukes can send powerful EMPs to the surface. So what exactly is an EMP, and how dangerous are they?

  • What if Singularities DO NOT Exist?: asset-mezzanine-16x9

    What if Singularities DO NOT Exist?

    S10 E1 - 14m 44s

    It's not too often that a giant of physics threatens to overturn an idea held to be self-evident by generations of physicists. Well, that may be the fate of the famous Penrose Singularity Theorem if we're to believe a recent paper by Roy Kerr. Long story short, the terrible singularity at the heart of the black hole may be no more.

Extras + Features

  • Black Holes from the Dawn of Time: asset-mezzanine-16x9

    Black Holes from the Dawn of Time

    S2 - 10m 16s

    Primordial black holes may be lurking throughout our universe. How large are they, how many are out there and what would happen if they moved through our solar system?

  • Quantum Entanglement (The Bohr-Einstein Debate): asset-mezzanine-16x9

    Quantum Entanglement (The Bohr-Einstein Debate)

    S2 - 11m 24s

    Albert Einstein strongly disagreed with Niels Bohr when it came to Bohr’s interpretation of quantum mechanics. Quantum entanglement settled the argument once and for all.

  • Will the Universe Expand Forever?: asset-mezzanine-16x9

    Will the Universe Expand Forever?

    S2 - 9m 51s

    Throughout history, there has been much speculation about what the fate of the universe would be. Many theorized that the universe would eventually succumb to the pull of gravity, and reverse its expansion in what was being called ‘The Big Crunch.’ However, with the help of mathematical equations from Newton, Einstein, and Alexander Friedmann, we now have an answer.

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