[Server-sky] [Beowulf] Server Sky - Internet and computation in orbit

[Eugen Leitl]

On Fri, Jun 21, 2013 at 01:20:26PM -0700, Jonathan "Duke" Leto wrote:
> Howdy,
> 
> Just as an FYI to people new to the list:
> 
> Bring your amazing ideas and passion in spades, but leave negativity
> at the door.

There's no negativity -- certainly not from me.

There's some impedance mismatch due to list crossposting.
This will cease soon enough.
 
> Keith has done an amazing amount of research already, so if you think
> you have thought of something he hasn't, you are most probably dead
> wrong.
> 
> Let's play nice!
> 
> Duke
> 
> On Fri, Jun 21, 2013 at 8:40 AM, Eugen Leitl <eugen at leitl.org> wrote:
> > ----- Forwarded message from "Lux, Jim (337C)" <james.p.lux at jpl.nasa.gov> -----
> >
> > Date: Fri, 21 Jun 2013 15:35:00 +0000
> > From: "Lux, Jim (337C)" <james.p.lux at jpl.nasa.gov>
> > To: "Beowulf at beowulf.org" <Beowulf at beowulf.org>
> > Subject: Re: [Beowulf] Server Sky - Internet and computation in orbit
> >
> > A couple fundamental questions arise in this sort of strategy (which is nothing really new, although technology advances are making it easier)
> >
> > 1) orbital debris - fling those thousands of widgets out there.  Are they high enough to stay in orbit for a while? Are they going to damage things that hit them?
> > 2) orbital mechanics - the "array" pretty much has to be flat, that is, they're all at the same orbit height, otherwise they'll drift apart, since the period is different.   There's also a whole raft of issues about orientation, etc., stability of the orbit.  As we all know, the earth is not a perfect sphere with perfect 1/r^2 gravity.  There are some remarkably stable orbits (I worked on a satellite that is in one: QuikSCAT 801km orbit at 98.6 degree inclination, a perfect 4 day repeat cycle that is very stable)
> >
> > 3) does it really save anything to put the computation in orbit? As much as I love computing in space (particularly deep space), if you had a solar powered conventional data center on the ground and a fat comm pipe to those third world countries, wouldn't that work as well?  The solar plant on the ground will see about 1/3 the solar power as one in the right orbit (which may not be stable, see #2), but mass to orbit is expensive, so why not put all those solar cells to work on the earth's surface, rather than spending energy to put them into orbit.
> >
> > I'd like to see more justification of the 100x cost differential between ground and space 25 years from now.
> >
> > Jim Lux
> >
> >
> > -----Original Message-----
> > From: beowulf-bounces at beowulf.org [mailto:beowulf-bounces at beowulf.org] On Behalf Of Eugen Leitl
> > Sent: Friday, June 21, 2013 3:32 AM
> > To: tt at postbiota.org; Beowulf at beowulf.org; NANOG list; forkit!
> > Subject: [Beowulf] Server Sky - Internet and computation in orbit
> >
> >
> > (This may be Wacky Friday, but this one is not tongue in cheek -- the name Keith Lofstrom should ring a bell).
> >
> > http://server-sky.com/
> >
> > Server Sky - internet and computation in orbit
> >
> > It is easier to move terabits than kilograms or megawatts. Space solar power will solve the energy crisis. Sooner if we process space power into high value computation before we send it to earth. Computation is most valuable where it is rarest - in the rural developing world. Human attention is the most valuable resource on earth, and Server Sky space-based internet can transport that attention from where it is most abundant to where it is most valued.
> >
> > _______________________________________________
> > Beowulf mailing list, Beowulf at beowulf.org sponsored by Penguin Computing
> > To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
> >
> > ----- End forwarded message -----
> > --
> > Eugen* Leitl <a href="http://leitl.org">leitl</a> http://leitl.org
> > ______________________________________________________________
> > ICBM: 48.07100, 11.36820 http://ativel.com http://postbiota.org
> > AC894EC5: 38A5 5F46 A4FF 59B8 336B  47EE F46E 3489 AC89 4EC5
> > _______________________________________________
> > Server-sky mailing list
> > Server-sky at lists.server-sky.com
> > http://lists.server-sky.com/mailman/listinfo/server-sky
> 
> 
> 
> -- 
> Jonathan "Duke" Leto <jonathan at leto.net>
> Leto Labs LLC http://letolabs.com
> 209.691.DUKE http://duke.leto.net
> @dukeleto
-- 
Eugen* Leitl <a href="http://leitl.org">leitl</a> http://leitl.org
______________________________________________________________
ICBM: 48.07100, 11.36820 http://ativel.com http://postbiota.org
AC894EC5: 38A5 5F46 A4FF 59B8 336B  47EE F46E 3489 AC89 4EC5