AaS! 104: What turned Venus into hell?
Ask a Spaceman!
Paul M. Sutter
4.8 • 853 Ratings
🗓️ 21 May 2019
⏱️ 24 minutes
🧾️ Download transcript
Summary
What’s so bad about Venus, besides everything? How did it get so bad? And are we next? 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 Cathy Rinella for editing.
Hosted by Paul M. Sutter, astrophysicist at The Ohio State University, and the one and only Agent to the Stars (http://www.pmsutter.com).
Transcript
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| 0:00.0 | So, Venus, what went wrong? What went wrong? Venus was so promising. I mean, 80% the mass of the Earth, |
| 0:19.9 | 94% the radius of the Earth, pretty much started with the exact same mix of elements of oxygen and silicon and carbon and nitrogen and water. |
| 0:30.1 | It was in the habitable zone. |
| 0:32.0 | It still is in the habitable zone. |
| 0:34.0 | You know, the region around a star where it's not too close and too hot, and it's not |
| 0:39.4 | too far and too cold where all the water turns in ice, it's where you can have liquid water |
| 0:44.2 | around the star. What went wrong? What were wrong? We're pretty sure that billions of years ago, |
| 0:52.1 | Venus was nice |
| 0:54.2 | probably had liquid water |
| 0:56.2 | oceans and blue skies and white fluffy clouds |
| 0:59.0 | and rainbows and unicorns |
| 1:01.0 | maybe not the unicorns but Venus was pretty nice |
| 1:03.8 | and then something went wrong |
| 1:06.2 | way wrong |
| 1:08.5 | Venus isn't so pretty anymore is it |
| 1:13.3 | sometimes Venus has gotten the nickname of Earth's |
| 1:18.3 | sister planet because it's so close in size and mass |
| 1:22.2 | one paper I read called Venus Earth's twisted sister. |
| 1:28.4 | And, oh, I mean, there's so much going wrong with Venus. |
| 1:35.5 | It's where to start. |
| 1:38.0 | Can we start with the pressures? |
| 1:39.7 | Can we start with the atmospheric pressure? |
... |
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