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MichaelNolan commented on SpaceX in Talks for Share Sale That Would Boost Valuation to $800B   wsj.com/business/spacex-i... · Posted by u/bko
modeless · 8 days ago
Even without Starship Falcon Heavy is still competitive with New Glenn, and nobody is anywhere close to competing with Starlink (Amazon is still far behind, as is ASTS). And if Starship works SpaceX will still be in the lead for a long, long time.

IMO the only remaining unanswered question for the Starship program is the reusability of the heat shield. There's no reason to believe any other part of it can't work.

MichaelNolan · 8 days ago
I always had the impression that the propellant transfer was the harder question than the heat shield. They have done a transfer demo from one internal tank to another, but they still need to test from one ship to another ship.

I only casually follow the news from r/spacex, but prop transfer is what I see generate the most discussion. It’s a hard requirement for all deep space missions. Where the heat shield could be refurbished between launches.

MichaelNolan commented on Uber and Avride launch robotaxi service in Dallas   techcrunch.com/2025/12/03... · Posted by u/MichaelNolan
MichaelNolan · 10 days ago
Uber press release - https://www.uber.com/newsroom/avride-on-uber/

AVRide press release - https://medium.com/avride/avride-and-uber-launch-robotaxi-ri...

I’m excited to see this. Ideally we want as many successful (safe) AV companies as possible to avoid a monopoly/duopoly situation.

MichaelNolan commented on Datacenters in space aren't going to work   taranis.ie/datacenters-in... · Posted by u/mindracer
Analemma_ · 14 days ago
I'm sorry, but this is stupid. It's the same dumb thinking behind Sealand: "we're outside state borders! nobody can touch us!", which was only true as long as nobody cared what they were doing. Once Sealand actually started angering people, the Royal Navy showed up and that was that. "Datacenters in space" wouldn't fare any better: multiple nations have successfully tested anti-satellite weapons.
MichaelNolan · 14 days ago
> Once Sealand actually started angering people, the Royal Navy showed up and that was that.

What did the royal navy do? There is no mention of the UK using force against sealand in either the Wikipedia page or this BBC article about sealand. (Though obviously the royal navy could retake sealand if they wanted)

https://en.wikipedia.org/wiki/Principality_of_Sealand

https://www.bbc.com/news/uk-england-suffolk-41135081

MichaelNolan commented on Writing Builds Resilience in Everyday Challenges by Changing Your Brain   scienceclock.com/writing-... · Posted by u/PikelEmi
westcoast49 · 15 days ago
I’m sure it does. If you ask a question, it forces you to think the problem through, which has a similar effect as the kind of therapeutic writing that is mentioned in this article.
MichaelNolan · 15 days ago
A well thought out question definitely counts. (Though the majority of my questions to chatGPT certainly are below that threshold)

I’m reminded of this article about writing good Anki cards. The act of writing a good question is at least as important, if not more so, than the spaced repetition part.

https://andymatuschak.org/prompts/

MichaelNolan commented on Baikonur launch pad damaged after Russian Soyuz launch to Space Station   reuters.com/science/baiko... · Posted by u/perihelions
MichaelNolan · 16 days ago
Russia is saying the damage will be repaired “soon”. I’ve seen some other (potentially biased) sources saying it will closer to a year or two to fix.

Back when the US was reliant on Russia to get to the ISS the US paid 60 to 90 million dollars per seat. I wonder if the US will charge the same now. Would Russia pay that much? Their space agency seems strapped for cash lately.

MichaelNolan commented on China Has Three Reusable Rockets Ready for Their Debut Flights   china-in-space.com/p/chin... · Posted by u/speckx
spyspy · 17 days ago
If you haven't been following space updates closely, the US is _already_ in a race with China, especially in regards to the Artemis (moon) missions. That being said it's mostly being used as an excuse to keep SLS alive and prop up the legacy space contractors... It's hard to lose a contest you won 60 years prior...
MichaelNolan · 17 days ago
> It's hard to lose a contest you won 60 years prior...

If you pick a random person off the street and ask them who discovered the Americas will they answer 1. Leif Erikson, 2. Indigenous peoples or 3. Christopher Columbus? If you ask people who invented the smartphone will they say Apple or some other company?

It’s absolutely possible to lose a race you had previously won.

MichaelNolan commented on PS5 now costs less than 64GB of DDR5 memory. RAM jumps to $600 due to shortage   tomshardware.com/pc-compo... · Posted by u/speckx
dylan604 · 19 days ago
wait, are you saying that there's no difference between regular and premium gas?
MichaelNolan · 19 days ago
The “regular” and “premium” label at the pump is misleading. The premium gas isn’t better. It’s just different. Unless your car specifically requires higher octane fuel, there is no benefit to paying for it. https://www.kbb.com/car-advice/gasoline-guide/
MichaelNolan commented on China reaches energy milestone by "breeding" uranium from thorium   scmp.com/news/china/scien... · Posted by u/surprisetalk
hunterpayne · 21 days ago
That's capacity, not generation. Getting through the accounting tricks that make renewables seem viable is a challenge. 1 watt of nuclear capacity is worth 1.5 watts of FF and 9 watts of renewables. That's because the amount of power from each type of plant is very different due to downtimes of generation. Nuclear runs all the time and refuels for a couple of days every 18 months (depending on the reactor). FF plants run most of the time by require 10x more maintenance downtime. Renewables only make power about 10% of the time. That's how they skew the numbers to make renewables seem viable when they produce a shockingly low amount of actual power. Oh, and if you use renewables for baseload you have to keep a spinning reserve which means they actually increase (not decrease) the amount of CO2 emitted per watt generated.
MichaelNolan · 20 days ago
> That's capacity, not generation.

No that’s generation. It’s on page 49 of the report. Table 7d Part 1 “US Regional Electricity Generation” it’s measured in billions of kilowatt hours.

https://www.eia.gov/outlooks/steo/pdf/steo_full.pdf

And if anyone is interested I have some of my own graphs on top of the EIA data to make it easier to read - https://eia.languagelatte.com/

u/MichaelNolan

KarmaCake day519January 17, 2023View Original