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Joined 1 year ago
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Cake day: July 20th, 2023

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  • From a product development viewpoint, the gun is an uninteresting part. It’s better to use something that already has a mature production line and has been thoroughly field tested. It’s the vision and control systems they are interested in developing, the gun is just the chosen end effector for this application.

    Even when they’re ready to start deploying systems like this, there’s a lot of value in using compenents that the military already has a lot of spare parts for and that personnel know how to maintain. I wouldn’t expect a custom gun until units like this are commonplace.



  • For example, I used to use generic eye drops. Then there were a bunch of recalls on eye drops made in India because they weren’t kept sterile and people were getting eye infections. So now I make sure to only buy eye drops that are manufactured in countries with actual controls on health codes. It turns out that imposing that restriction elliminated all the generic options. I’m certainly not happy to be paying double for brand name pataday, but I don’t care to mess with the chance of eye infections.


  • It’s not a rescue mission. It was an already scheduled mission which is why it’s 6 months long. Two of the originally scheduled crew got their seats bumped so the boeing capsule test asteonauts would have seats for a normal return. Wilmore and Wiliams could have returned in the other spacex capsule that was already up there in case of emergency. They were never stranded.















  • https://www.planetary.org/articles/why-international-space-station-cant-operate-forever

    The ISS has gone through multiple reboosts to gain altitude because there is a small amount of atmospheric drag in its orbit. That’s not the limiting factor though.

    The structure is aluminum. Aluminum accumulates fatigue damage every time it flexes. Every time the iss goes from sunlight to the earths shadow, there is significant thermal expansion/contraction. This fatigues the structure. The repeated docking maneuvers also stress the structure. Radiation and atomic oxygen also cause degredation. All those factors are relatively minor in any given year, but are always accumulating. The ISS is getting less safe and the risk of a structural failure is increasing.

    On top of that all, a bunch of the systems on board were designed 30 years ago. There have been major changes in communications, power systems, etc. in the time since the modules were built. Even though new experiments are built all the time, they are still constrained by capabilities of the capsules they operate in. So there are also science advantages to moving to a newer platform.