4.8 • 853 Ratings
🗓️ 4 December 2018
⏱️ 41 minutes
🧾️ Download transcript
Where is the Oort Cloud and what is it made of? Why do we think some comets come from there? If the Oort Cloud exists, how did it form? 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).
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0:00.0 | One of my favorite parts about the force of gravity, and don't tell anyone, but it just might be my favorite force. |
0:14.2 | But then all the others are so cool. |
0:16.2 | But anyway, different episode. |
0:19.6 | One of my favorite parts about the force of gravity is how quiet it is, how soft it is. |
0:29.1 | It's by far the weakest force, and that is no exaggeration. |
0:34.8 | It's like even if it was a billion times stronger, it'd still be |
0:38.3 | the weakest force. But it's persistent. It's persistent. It's quiet but persistent in how |
0:45.1 | this can make it sinister, almost. It's the ultimate example of soft power. It shapes and sculpts and guides you without you really realizing it. |
1:00.4 | This episode is about the Ort Cloud, the home of the comets, but really it's an episode about |
1:07.1 | whispers and influence and patience. Gravity is subtle, it's weak, but it doesn't give up. |
1:15.8 | It may offer a little suggestion here or a helping hand there, and if it doesn't change your mind |
1:21.2 | now, it's not worried. If it doesn't change your mind in a thousand years, it's not bothered. |
1:25.7 | Gravity plays the long game. A million years, a billion years, it's not bothered. Gravity plays the long game. A million |
1:28.7 | years, a billion years, that's the domain, where gravity's true strength shines. This is something |
1:36.9 | gravity does that no other force is capable of. Gravity is so weak, it's so quiet, you don't even |
1:43.5 | know when you're under its spell. |
1:46.6 | A little nudge to your orbit here, a shifting of your speed there. |
1:50.8 | It doesn't take much and you won't notice, but gravity will still be there, still whispering |
1:56.4 | in your ear, still smiling. |
1:59.5 | And then before you know it, after spending tens of thousands of years in blissful complacency, |
2:04.8 | you'll find yourself on an inescapable path, a trajectory that will lead directly to your death. |
2:12.4 | And gravity will just keep smiling. |
... |
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