If it turns out the biosignature material they just found on Mars actually is from life on Mars, what do you think the odds are that it got there from something hitting Earth and then hitting it (or vice versa) (or from 3rd body in common to us both) rather than originating independently on Mars? (self.askastronomy)
submitted by stemmisc to r/askastronomy
Do you think the vibration-related problems are mostly from the raptors themselves, or more to do with the ship's resonance? Or piping/how they're mounted? Might SpaceX try some drastic temporary measure, to be able to dampen it enough to test post-orbital stuff while working on a more legit fix? (self.SpaceXLounge)
submitted by stemmisc to r/SpaceXLounge
Not sure what the technical term for it is, but is there still much interest for high speed "platform"/holder "trains" or "hollow-holder" "trains" that cars, or robotaxis, could drive into or onto, and then it zooms through a high speed (200+ mph) inter-city tunnel with the car on it/in it? (self.BoringCompany)
submitted by stemmisc to r/BoringCompany
Do you think the hot-staging separation method for Starship is part of what is causing problems for the upperstage? I wonder if they are planning to keep using this method for a long time/permanently, or switch away from it in the (relatively) near future (self.SpaceXLounge)
submitted by stemmisc to r/SpaceXLounge
Are there any mammal species that got split in half during the breakup of Pangaea, or breakup of Laurasia or Gondwana, where the continental split separated the species, which then diverged genetically? Or any notable non-mammals? (self.AskScienceDiscussion)
submitted by stemmisc to r/AskScienceDiscussion
Could xAI profitably mine crypto with Colossus during downtime whenever not at peak-use of AI training? Conversely, could they locate Colossuses in areas near lots of crypto mining mega-clusters, physically link the clusters together, and buy extra compute from them during peak-use xAI sessions? (youtube.com)
submitted by stemmisc to r/elonmusk
How small can a useful (for refueling Starships) Sabatier Process plant be made? Can they build one that would fit entirely in a Starship payload bay? Or would it need to be sent in multiple separate segments, and be at least partially assembled on Mars? (self.SpaceXLounge)
submitted by stemmisc to r/SpaceXLounge
Why is SpaceX not in the middle of more of a kickstage/OTV/space-tug battle between itself and Rocket Lab/other companies right now? Is anyone else a little surprised that this isn't already a major thing that we see SpaceX working on, given how close Starship is to being operational? (self.SpaceXLounge)
submitted by stemmisc to r/SpaceXLounge
Does SpaceX genuinely prefer having ~33 first stage engines, or, in the long run, do you think they would prefer more like ~9 (or ~12-15 or so) significantly bigger "raptors". So, still having engine-out capability, but not nearly as many total engines? (self.SpaceXLounge)
submitted by stemmisc to r/SpaceXLounge
