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SpaceX plans worldwide satellite Internet with low latency, gigabit speed

arstechnica.com

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Re: SpaceX plans worldwide satellite Internet with low latency, gigabit speed

#511

Post by perseusprime11 »

schiffern wrote: post #357
katzgrau wrote: post #7

Free, global internet access is the next step toward a smarter, more progressive planet. I don't even care about the speed - if the only thing users could access was wikipedia, I'd still personally donate to the project. I cannot emphasize how important democratizing knowledge is to me (and many others).

>Free, Not free according to Musk. https://www.youtube.com/watch?v=AHeZHyOnsm4&t=12m37s > Well it can't be free. Because then we'll, like, we'll go out of business. [laugh] > No, no, it can't be free to the user. I don't think so. > This would be... this would cost a lot to build. Ultimately over time to build the full version of the system, we're talking about something that would be 10 or 15 billion dollars to crea…

I like Elon but think he is not thinking straight here. Eventually Internet will become free. No point in thinking of making significant revenue.

Re: SpaceX plans worldwide satellite Internet with low latency, gigabit speed

#512

Post by ooqr »

legolas2412 wrote: post #87
gibybo wrote: post #22

Earlier quoted context omitted.

People aren't generally using a 1 gbps connection at 100% capacity 100% of the time. If we assume customers use an average of 1 TB of data per month and the time they use it is pretty spread out (seems reasonable since they are going to be spread out accross timezones eventually), you can serve about 6 million customers with 800 satelites @ 23 GBPS, and with 4400 @ 23 GBPS you could do ~33 million. Admittedly these n…

But isn't it still cheaper to lay fiber cables? For example, 23*4400 = 101Tbps, but I guess many of the satellites will end up above water, so maybe around 60Tbps. One cable by google did that for 300mil$ [1] Maybe it is good for last mile connectivity, which is probably a good target, but only for less populated areas where LTE isn't available. [1] https://www.extremetech.com/internet/231074-googles-faster-u...

They're presumably aiming for some amount of economy of scale by using their own rocketry service. Dollar for dollar comparison doesn't account for the fact that they're investing some of that cost into further rocketry development.

Re: SpaceX plans worldwide satellite Internet with low latency, gigabit speed

#513

Post by ooqr »

mnw21cam wrote: post #366
oillio wrote: post #288

Earlier quoted context omitted.

Why not? I wonder if you could construct a polar orbit that followed the daylight around the earth. Add higher concentrations of satellites to the orbits that correspond to the higher traffic hours of the day.

Yes, it's called a sun-synchronous orbit https://en.wikipedia.org/wiki/Sun-synchronous_orbit The exact orbit has to be arranged so that it precesses once a year, keeping it aligned with a particular local time of day. "Typical sun-synchronous orbits are about 600–800 km in altitude, with periods in the 96–100 minute range, and inclinations of around 98°"

Yet another reason to do away with DST

Re: SpaceX plans worldwide satellite Internet with low latency, gigabit speed

#515

Post by bcook »

nickpsecurity wrote: post #462
dingaling wrote: post #279

Earlier quoted context omitted.

That page constructs its own argument and then deconstructs it. It doesn't actually disprove the OP's statement. The reason that GR and SR have "no bearing" is because they've already been designed into the system... From "Understanding the NAVSTAR" 2nd Edition, by Tom Logsdon ( one of the designers of the system ) the time-dilation is compensated through: 1. Off-setting the clock ticking-rate during manufacture of e…

That's the one. There's pages one can get from Google with some of the data and illustrations if they can't get the book. It tripped me out when I found out they had to design relativity into it.

I knew I shouldn't have questioned you so flippantly... Lesson learned.

Re: SpaceX plans worldwide satellite Internet with low latency, gigabit speed

#517

Post by baq »

manigandham wrote: post #484
CaptSpify wrote: post #468

Earlier quoted context omitted.

One of the good impressions that I get from Musk: Money does not seem to be his goal, but rather a side-effect of good technology. Unlike a lot of other people who seem to use good technology as a means of achieving money. He seems genuinely eager to get projects started and self-sustainable so that they can outlive him and push humanity forward.

> Unlike a lot of other people who seem to use good technology as a means of achieving money. There's nothing wrong with this. In fact many pure tech projects fail completely because they don't understand how to make money, ultimately helping no one.

that's the whole point of the GP: it's not the tech or the money that's the goal, it's the helping out part that drives both the tech and the money. i agree that this doesn't look usual and i applaud Musk for becoming rich and still being focused on his original goals instead of trying to make more money.

Re: SpaceX plans worldwide satellite Internet with low latency, gigabit speed

#518

Post by nickpsecurity »

bcook wrote: post #515
nickpsecurity wrote: post #462

Earlier quoted context omitted.

That's the one. There's pages one can get from Google with some of the data and illustrations if they can't get the book. It tripped me out when I found out they had to design relativity into it.

I knew I shouldn't have questioned you so flippantly... Lesson learned.

Feel free to question as Im a human acting on incomplete information like the rest. ;) Just don't assume or read in too much as that can get you. Happened to me plenty here, too, haha.

Re: SpaceX plans worldwide satellite Internet with low latency, gigabit speed

#519

Post by jayshua »

perseusprime11 wrote: post #511
schiffern wrote: post #357

Earlier quoted context omitted.

>Free, Not free according to Musk. https://www.youtube.com/watch?v=AHeZHyOnsm4&t=12m37s > Well it can't be free. Because then we'll, like, we'll go out of business. [laugh] > No, no, it can't be free to the user. I don't think so. > This would be... this would cost a lot to build. Ultimately over time to build the full version of the system, we're talking about something that would be 10 or 15 billion dollars to crea…

I like Elon but think he is not thinking straight here. Eventually Internet will become free. No point in thinking of making significant revenue.

Why is that inevitable?

Re: SpaceX plans worldwide satellite Internet with low latency, gigabit speed

#520

Post by mirimir »

mirimir wrote: post #499
mirimir wrote: post #460

Earlier quoted context omitted.

I got the sense that this was far more than fringe.

And to expand/clarify, my point is that racism and xenophobia have been widespread among European-Americans since colonization. And they remain so, and not just in the "red states". Elsewhere, they're just hidden, especially by men from women. KKK may be a fringe, but there's a broad resonance. Consider, for example, that Harvard University professor Henry Louis Gates, Jr. was arrested for breaking into his own house…

Damn! "... the Trump team has not somehow made European-Americans more racist and xenophobic. ..."
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