4.6 • 2.7K Ratings
🗓️ 19 April 2025
⏱️ 4 minutes
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0:00.0 | I'm John Batchel with Bob Zimmerman. |
0:06.7 | We've got a problem. |
0:08.2 | The problem is a biosignature. |
0:11.0 | Bob, what is a biosignature? |
0:13.0 | I don't know if this is a problem. |
0:14.0 | This could be very exciting. |
0:15.0 | It could be absolutely nothing. |
0:17.0 | It's very important to point out this is a problem. |
0:19.0 | Yeah, right. Okay. |
0:21.9 | So anyway, astronomers using the web telescope looking at a exoplanet that's a super |
0:27.5 | Earth, it's eight times as massive as the Earth and two and a half times larger. |
0:31.8 | It orbits a red dwarf star, 124 light years away, but it also orbits it in the habitable zone. |
0:39.3 | And previously, they detected methane and carbon dioxide in its atmosphere. |
0:43.9 | And so there's theories that it might be a planet that's ocean covered with a hydrogen-rich |
0:48.4 | atmosphere. |
0:48.9 | That's the theory. |
0:49.8 | It's not proven. |
0:51.7 | But these guys had detections that suggested there were some molecules in the atmosphere |
0:56.6 | that were of significance. |
0:59.4 | So they used Webb to do further observations, and they think they've gotten a detection of two |
1:06.5 | different molecules that are found on Earth only associated with life. You don't find these molecules |
1:13.8 | except in the connection with produced from life. So is that a biosignature on an exoplanet? |
... |
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