First Aired: February 11st, 2015
Status: Continuing
Network: PBS
Summary: 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 with our astrophysicist host - Matthew O’Dowd.
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# of Episodes: 340
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# of Episodes I haven't watched: 340
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Season 2021
Episode 1: What Happens During a Quantum Jump?
Air Date: January 13rd, 2021
Summary: Since the very beginning of quantum mechanics, a debate has raged about how to interpret its bizarre predictions. And at the heart and origin of that debate is the quantum jump or quantum leap - the seemingly miraculous and instantaneous transitions of quantum systems that have always defied observation or prediction. At least, until now.
Episode 2: Can We Break the Universe?
Air Date: January 20th, 2021
Summary: Today we’re going to delve into a couple of the most famous paradoxes of special relativity - the Twin Paradox, The Ladder Paradox (aka the Barn-Pole Paradox), and a paradox suggested by our very own viewers, which asks whether a spaceship could wrap around the universe & destroy itself. We’ll explore these paradoxes and see why, against our intuition, the universe really does work in this seemingly nonsensical way. But the point of this episode is to go much further - we’re going to try to break the universe by pushing these paradoxes beyond the limit.
Episode 4: How Does Gravity Warp the Flow of Time?
Air Date: February 11st, 2021
Summary: There’s a deep connection between gravity and time - gravitational fields seem to slow the pace of time in what we call gravitational time dilation. And today we’ll explore the origin of this effect. And ultimately, we’ll use what we learn to understand how curvature in time - this gradient of time dilation - can be thought of as the true source of the force of gravity.
Episode 5: Gravitational Wave Background Discovered?
Air Date: February 18th, 2021
Summary: It was pretty impressive when LIGO detected gravitational waves from colliding black holes. Well we’ve just taken that to the next level with a galaxy-spanning gravitational wave detector that may have detected a foundational element of space itself - the gravitational wave background.
Episode 6: Does Time Cause Gravity?
Air Date: -
Summary: We know that gravity must cause clocks to run slow on the basis of logical consistency. And we know that gravity DOES cause clocks to run slow based on many brilliant experiments. But I never explained WHY or HOW gravity causes the flow of time to slow down. And I’m not going to explain it now - because in a sense it’s not true. Gravity does NOT warp the flow of time. It’s the other way around - the warping of time causes gravity.
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