Recent comments in /f/space

TheRoadsMustRoll t1_j9v0mui wrote

>...kinks in the AI algorithm...

would there be a part of that algorithm that touches on any known aspect of actual alien life? because, without having experienced or interacted with an actual alien; it won't ever know what it's looking for. right?

its like asking AI which dress i'll wear when i've never once worn a dress: the return is going to be a random guess or null.

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StoopidestManOnEarth t1_j9uy0hy wrote

Oh sweet! You can join me on my trip. I'm taking my mineral collection and we can make petri dishes out of our armpit sweat. I've already got over 378 petri dishes going and I can't wait to see how yours compares to mine.

Once we get there, I'm going to set up my speaker system and play tibetan throat music while I mediate out loud.

I think we'll have the best of time, especially since it'll be just the two of us.

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Brickleberried t1_j9uvfrb wrote

I don't like calling gas giant "failed stars". There are two ways to define a planet (at the high mass end; edit: 3 ways, see lower comment):

  1. If it formed from core accretion in a disk, it's a planet. (Conversely, if it formed from disk instability and gravitational collapse, it's not a planet.)
  2. If it's under the mass required to fuse deuterium (~13 Jupiter masses), it's a planet.

Both definitions have pros and cons. Since we typically think of gas giants as planets that formed via core accretion, I wouldn't call any of them "failed stars" since they form completely differently than actual stars.

However, if a nominal gas giant formed via disk instability/gravitational collapse, but doesn't burn regular hydrogen, then "failed star" is appropriate.

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PandaEven3982 t1_j9uuzn9 wrote

I invite you to look at what this discussion devolved into, and factor in pollution, global warming, decling biodiversity, etc. It's not like we have a lot of time. At this rate, the more interesting question is who drowns or bakes first. We're generating enough heat to actually delay what should be an encroaching ice age, according to the science we think we know.

I think you're an optimist. Shrugs.

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Brickleberried t1_j9uuuyc wrote

So "size" in this context means radius of the star vs. planet, not the mass, area, or volume.

I think calling it "forbidden" is very hyperbolic. It's at the extreme end of what we know, but it's not unreasonable for it to form as such under current planet formation theories given reasonable uncertainties and variability.

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DBDude t1_j9ut6me wrote

I wonder why they had so many problems with that engine, slipping the deadline again and again. Really, it's yet another oxygen-rich staged combustion engine, even simpler than the dual-chamber RD-180 it replaces. The Raptor is doing fine, and it's a much more complicated engine to engineer (full flow staged combustion).

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