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All Space Questions thread for week of August 04, 2024

They'll probably use the same docking port. It's used by all the big suppliers so to use anything else would be foolish. I would imagine power and telemetry transfer is part of that so I doubt there would be any issues.




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Mark Kelly Could Halt Plans To Crash The International Space Station

fencethe900th
replied to AyDylo

It is past the hardest part, but it would still take a huge amount of fuel, especially due to the size of it.


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Mark Kelly Could Halt Plans To Crash The International Space Station

This is the most current experiment I'm aware of.

https://www.freethink.com/space/space-junk-fusion


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Mark Kelly Could Halt Plans To Crash The International Space Station

It would require shielding on anything we put up, but that would only reduce the mass of the actual payloads we could launch. In LEO the debris would clear within a few decades due to atmospheric drag, and much less if we started cleaning it up ourselves, which we would.

A laser broom is the most promising method as far as I know. You hit the piece of debris with a laser that vaporizes the surface where it's hitting, turning the piece into a small rocket. You use that to slow it down so it drops into the atmosphere.


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One is wrong, one is a loose term that technically could be misunderstood but is common grammar, even in the relevant field.


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Right. He also mentioned that coming in under budget like that was getting rarer anyway because they were hampered by red tape and the regulations that were coming out. Understandable regulations for the most part I would assume, but still. And that was in the 70's and 80's I think.


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However it is commonly understood that you are at the bottom of the group of people contained within that percentage, plus or minus the margin for error.


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you set the new baseline price for future negotiations

And according to Skunk Works, a book about the head of said division of Lockheed that built the U-2, F-117, and SR-71, if you go too far under your bid you can be fined for overbidding.


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Mark Kelly Could Halt Plans To Crash The International Space Station

And in that analysis they found it would take significantly more fuel to boost it high enough that the atmosphere wouldn't cause it to deorbit within a century, and that it would be hit even more with debris unless they pushed it even higher, taking an extreme amount of fuel to do so.




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Mark Kelly Could Halt Plans To Crash The International Space Station

And found a controlled deorbit would take less than half the fuel, while raising the orbit would increase impact risk.


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Mark Kelly Could Halt Plans To Crash The International Space Station

That report says a controlled deorbit would take less than half the delta-V (57 m/s instead of 120-140 m/s to boost it to 640-680 km altitude) and that the higher you go the more risk of impacts due to the debris lasting longer up there.


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Mark Kelly Could Halt Plans To Crash The International Space Station

Scott Manley talked about the possibility of Axiom taking something with them. Their modules will be launched in a couple years, and then they'll detach before the ISS is retired and will start their own station.


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Raptor 3, SN1

fencethe900th
replied to twinbee

The worst is when you solve the problem and at most it just needs a little dialing in to be just right before you realize that. Then you have to choose between the clever solution you came up with or the super simple but objectively better bare bones version.


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Striped Vat screws

You can probably find new screws to replace them. I would guess they're a pretty standard size.


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The moon's thin atmosphere is made by constant meteorite bombardment

Craters noticeable by us are very rarely made. Most would be a few feet or less I would imagine, made by very small meteorites. Those are quite common. Earth is also hit by many of those, but our atmosphere prevents them from making it anywhere near the ground.


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Boeings Starliner Spacecraft

To be fair, it is looking a bit like NASA isn't comfortable with them coming back on Starliner.

https://arstechnica.com/space/2024/08/yes-nasa-really-could-bring-starliners-astronauts-back-on-crew-dragon/

I was well in the "quit pushing hysteria, they're just running tests before they dump the module before re-entry" camp. I'm moving further away from that, even if I still think they'll likely come back on Starliner. They're certainly not inspiring confidence with their delays and lack of certainty.





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Ents in the books took almost zero persuasion

fencethe900th
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However, the ents in the books also knew about what Saruman had done. In the movie that tips them into attacking when they realize, but in the books that's something they've known about for a while and hadn't done anything about.


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Stars in Milky Way

fencethe900th
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The core of a galaxy is much denser than the outer parts, where we are. This heavily skews how you think about it. Also, the Milky Way is around 1,000 light years thick, it's not just a flat disc.


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