AaS! 92: I give up, what is time?
Ask a Spaceman!
Paul M. Sutter
4.8 • 853 Ratings
🗓️ 20 November 2018
⏱️ 36 minutes
🧾️ Download transcript
Summary
What makes time so hard to understand? Why is it so different from the spatial dimensions? Is time in any way connected to that most difficult of concepts, entropy? I discuss these questions and more in today’s Ask a Spaceman!
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Music by Jason Grady and Nick Bain. Thanks to WCBE Radio for hosting the recording session, Greg Mobius for producing, and Cathy Rinella for editing.
Hosted by Paul M. Sutter, astrophysicist at The Ohio State University, Chief Scientist at COSI Science Center, and the one and only Agent to the Stars (http://www.pmsutter.com).
Transcript
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| 0:00.0 | Let me start with this. |
| 0:08.3 | We don't understand time. |
| 0:10.9 | We don't. |
| 0:11.7 | We don't. |
| 0:12.1 | It's a mystery. |
| 0:13.7 | So this episode is probably going to be a waste of time. |
| 0:24.6 | Because I'm about to do a whole lot of explaining by promise at the end of it there will be more questions and answers we do know some things about time and i've talked |
| 0:32.2 | about those in other episodes like the fact that space and time appear to be linked together |
| 0:36.9 | woven together in a |
| 0:38.4 | fabric of space time. |
| 0:40.5 | It looks like travel into the past is forbidden, and it looks like our entire universe is changing |
| 0:49.3 | with time. |
| 0:51.3 | And lots of you have asked about time, like Michael M on Facebook, at Matt |
| 0:57.8 | Chakoboski on Twitter, J.M. Audobon on Patreon, David M on YouTube, Adam H on email, P.E. |
| 1:05.5 | on email, Adiatar D on email, Mihail E on email, at Emilio Mira on Twitter and Roan H over on Facebook, all asking about time. |
| 1:15.9 | All sorts of very cool questions about time. |
| 1:18.2 | And this particular episode will only be answering a small subset of those questions and not satisfying any of you at all. |
| 1:26.5 | And in fact, to be perfectly honest, almost this entire episode |
| 1:29.3 | will not be about time, something you're asking about a lot, but instead be about entropy, |
| 1:36.3 | something that two of you have asked about. But I'm sorry, this is the way it is. You ask me |
| 1:43.3 | about time, you're going to get an episode about entropy, because as we're about |
| 1:47.3 | to get really thick into the weeds here very soon, and when it comes to explaining what |
... |
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