Rogue planet
17
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2
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2
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Search complete. 17 mentions across 2 episodes found for "Rogue planet".
Oct 6, 2026
A planet where the beer is free - EWTS #027
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9:34JoeHOST
Yeah.
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9:35SenanHOST
Um, and then finally there is the specter, the scary specter of something called rogue planets that we've discovered.
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9:41SenanHOST
So these are a particular type of exoplanet that, uh, could be dangerous, but, uh, we'll come back to that.
S
9:46SenanHOST
[laughs]
13 MINS LATER
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23:03JoeHOST
Yeah.
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23:03SenanHOST
Um, so tho- those are the ones that are in the Goldilocks zone, and we have tended to focus on that because, you know, wouldn't it be wonderful to be, to find another planet with life on it or somewhere we could live after we wreck this one? So yeah, tha- tha- there's a focus on that, and in fact, uh, uh, there's a, there's a, a, a specific satellite that's launching in a few years' time that will look f- uh, at those more closely, the ones that we think are in the Goldilocks zone.
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23:26SenanHOST
So let's, let's get back to these rogue planets.
S
23:28SenanHOST
So these are ones that don't have a star of their own.
These Exoplanet Discoveries Could Change Everything
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63:52speaker_0ADVERTISER
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63:58Alex McColganHOST
Rogue planets are one of the great mysteries left in the universe.
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64:03Alex McColganHOST
They are planetary-sized objects that are not gravitationally bound to a star.
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64:08Alex McColganHOST
We don't fully understand how they formed.
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64:12Alex McColganHOST
Perhaps they were born in a planetary system, but got ejected during the system's turbulent beginnings.
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64:18Alex McColganHOST
Following that thought, perhaps our own solar system also had additional planets at the beginning before they were cast away to forever roam the galaxy alone.
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64:28Alex McColganHOST
Rogue planets could also be protostars that simply failed to absorb the mass needed to become a star, or even a brown dwarf.
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64:37Alex McColganHOST
We expect there to be billions to trillions of them out there in just our galaxy alone, although because they are hard to detect, this really is an educated guess at best.