[ExI] Need creative help

Mon Jun 8 15:52:52 UTC 2026

We can always change the name, but the best so far seems to be SolarSyngas.

I have considerable doubt that this is enough time to build it before the
singularity runs over everything

Keith

Best wishes,

Keith

On Mon, Jun 8, 2026 at 2:35 AM Opener of the Way <
openerofthewaysentbymary at gmail.com> wrote:

> How about:
>    SolarForged Syngas
>
> On Mon, Jun 8, 2026, 12:02 AM Keith Henson <hkeithhenson at gmail.com> wrote:
>
>> I think O'Neill mentioned a 2 for one orbit, half a lunar month. But it
>> does not make any difference as long as it is in free space.
>>
>> At one point, I looked into lunar elevators. They work by going through
>> L1 and hanging down into the Earth's gravity. As I recall, if you extended
>> that part to around 190,000 km you were at the end of a Hohmann transfer
>> orbit to GEO.
>>
>> The big problem with any space colony proposal is to find something for
>> the inhabitants to do. That takes materials. A space elevator off the moon
>> would give them that.
>>
>> hBest wishes,
>>
>> Keith
>>
>>
>> On Sun, Jun 7, 2026 at 4:24 PM Mark Sonter <
>> mark.sonter at asteroidenterprises.com> wrote:
>>
>>> Hi Kieran,
>>>
>>>
>>>
>>> A 3:1 lunar resonant orbit (ie 9-day period) will have a perigee a
>>> couple of thousand km above GEO and an apogee a couple of thousand km below
>>> EM L1 altitude, but 180 degrees away (work it out).
>>>
>>>
>>>
>>> We had a bit of a look at this when I was associated with Deep Space
>>> Industries, but nothing was ever written up / published.
>>>
>>>
>>>
>>> Cheers,
>>>
>>>
>>>
>>> Mark
>>>
>>>
>>>
>>> --
>>> Mark J Sonter, mobile 0447 755 598  (delete '0' & replace with '61'
>>> country code if calling from overseas)
>>>
>>>
>>> Director & Principal Consultant, Radiation Advice & Solutions Pty Ltd,
>>> abn 31 891 761 435
>>> Principal, Asteroid Enterprises Pty Ltd, abn 53 008 115 302
>>> Chairman, Off Earth Resources Pty Ltd, abn 31 664 219 372
>>>
>>> Adjunct Assoc Prof, Andy Thomas Centre for Space Resources, Univ of
>>> Adelaide
>>>
>>> 116 Pennine Drive, South Maclean, Queensland 4280, Australia
>>> <https://www.google.com/maps/search/116+Pennine+Drive,+South+Maclean,+Queensland+4280,+Australia?entry=gmail&source=g>
>>>
>>> Please use marksonter at gmail.com for general or radiation related
>>> communications, and mark.sonter at asteroidenterprises.com for space
>>> related topics.
>>>
>>>
>>>
>>>
>>> “Keep everything as simple as possible, but no simpler” - A. Einstein
>>>
>>>
>>>
>>> *From:* k.a.carroll via Power Satellite Economics <
>>> power-satellite-economics at googlegroups.com>
>>> *Sent:* Thursday, 4 June 2026 8:56 PM
>>> *To:* Mark Sonter <mark.sonter at asteroidenterprises.com>;
>>> jerome.glenn at millennium-project.org; 'Paul Werbos' <
>>> paul.werbos at gmail.com>; 'John Clark' <johnkclark at gmail.com>
>>> *Cc:* 'Keith Henson' <hkeithhenson at gmail.com>; 'ExI chat list' <
>>> extropy-chat at lists.extropy.org>; extropolis at googlegroups.com; 'Power
>>> Satellite Economics' <power-satellite-economics at googlegroups.com>
>>> *Subject:* RE: Need creative help
>>>
>>>
>>>
>>> Mark;
>>>
>>>
>>>
>>> Interesting. I assume that you mean an orbit in a 3:2 orbital resonance
>>> with the Moon, just as Hilda is in a 3:2 orbital resonance with Jupiter?
>>>
>>>
>>>
>>> Has anyone published anything on the orbital dynamics of such a
>>> quasi-Hilda in the Earth-Moon system? If so, I’d be interested to take a
>>> look.
>>>
>>>
>>>
>>> - Kieran
>>>
>>>
>>>
>>> *From:* power-satellite-economics at googlegroups.com <
>>> power-satellite-economics at googlegroups.com> *On Behalf Of *Mark Sonter
>>> *Sent:* Wednesday, June 3, 2026 11:15 PM
>>> *To:* jerome.glenn at millennium-project.org; 'Paul Werbos' <
>>> paul.werbos at gmail.com>; 'John Clark' <johnkclark at gmail.com>
>>> *Cc:* 'Keith Henson' <hkeithhenson at gmail.com>; 'ExI chat list' <
>>> extropy-chat at lists.extropy.org>; extropolis at googlegroups.com; 'Power
>>> Satellite Economics' <power-satellite-economics at googlegroups.com>
>>> *Subject:* RE: Need creative help
>>>
>>>
>>>
>>> What about habitats in an Earth-Moon Hilda orbit?
>>>
>>>
>>>
>>> ‘The Hilda Habitats’
>>>
>>>
>>>
>>> Closer than L4 or L5. Resonant with the Moon. Close to GEO at Perigee,
>>> and to EM L1 altitude at apogee..
>>>
>>>
>>>
>>> Can be fed by mass launched from Moon, or imported from NEAs.
>>>
>>>
>>>
>>> Comments?
>>>
>>>
>>>
>>> Mark
>>>
>>>
>>>
>>> --
>>> Mark J Sonter, mobile 0447 755 598  (delete '0' & replace with '61'
>>> country code if calling from overseas)
>>>
>>>
>>> Director & Principal Consultant, Radiation Advice & Solutions Pty Ltd,
>>> abn 31 891 761 435
>>> Principal, Asteroid Enterprises Pty Ltd, abn 53 008 115 302
>>> Chairman, Off Earth Resources Pty Ltd, abn 31 664 219 372
>>>
>>> Adjunct Assoc Prof, Andy Thomas Centre for Space Resources, Univ of
>>> Adelaide
>>>
>>> 116 Pennine Drive, South Maclean, Queensland 4280, Australia
>>> <https://www.google.com/maps/search/116+Pennine+Drive,+South+Maclean,+Queensland+4280,+Australia?entry=gmail&source=g>
>>>
>>> Please use marksonter at gmail.com for general or radiation related
>>> communications, and mark.sonter at asteroidenterprises.com for space
>>> related topics.
>>>
>>>
>>>
>>>
>>> “Keep everything as simple as possible, but no simpler” - A. Einstein
>>>
>>>
>>>
>>> *From:* power-satellite-economics at googlegroups.com <
>>> power-satellite-economics at googlegroups.com> *On Behalf Of *
>>> jerome.glenn at millennium-project.org
>>> *Sent:* Wednesday, 3 June 2026 11:16 PM
>>> *To:* 'Paul Werbos' <paul.werbos at gmail.com>; 'John Clark' <
>>> johnkclark at gmail.com>
>>> *Cc:* 'Keith Henson' <hkeithhenson at gmail.com>; 'ExI chat list' <
>>> extropy-chat at lists.extropy.org>; extropolis at googlegroups.com; 'Power
>>> Satellite Economics' <power-satellite-economics at googlegroups.com>
>>> *Subject:* RE: Need creative help
>>>
>>>
>>>
>>> The reason was the merger with L-5 Society and National Space Institute
>>> (sometime referred to as No Space Intelligence).
>>>
>>>
>>>
>>> Jerry
>>>
>>>
>>>
>>> *From:* power-satellite-economics at googlegroups.com <
>>> power-satellite-economics at googlegroups.com> *On Behalf Of *Paul Werbos
>>> *Sent:* Wednesday, June 3, 2026 8:32 AM
>>> *To:* John Clark <johnkclark at gmail.com>
>>> *Cc:* Keith Henson <hkeithhenson at gmail.com>; ExI chat list <
>>> extropy-chat at lists.extropy.org>; extropolis at googlegroups.com; Power
>>> Satellite Economics <power-satellite-economics at googlegroups.com>
>>> *Subject:* Re: Need creative help
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> On Wed, Jun 3, 2026 at 8:20 AM John Clark <johnkclark at gmail.com> wrote:
>>>
>>>
>>>
>>>
>>>
>>> On Tue, Jun 2, 2026 at 10:14 PM Keith Henson <hkeithhenson at gmail.com>
>>> wrote:
>>>
>>>
>>>
>>>
>>>
>>> *> **L5 Society was the best name I ever came up with*
>>>
>>>
>>>
>>> *And that was a great name! It's simple and sticks in the mind. Why they
>>> chose to change it to something generic and completely forgettable I have
>>> no idea. *
>>>
>>>
>>>
>>> This is one small example of the many, many things I saw with my own
>>> eyes.
>>>
>>>
>>>
>>> The decision was to merge L5 with Von Braun's National Space Institute,
>>> to create NSS. I was the L5 rep to these discussions. If Gary Oleson still
>>> joins these discussions, he may also have relevant memories. The key person
>>> on the NSI side was Carol Rosin, whom I remember quite well from about four
>>> connections which immediately come to mind. (JUST now, I searched... she
>>> still has a big web presence; it says she is 82 years old now. Merger was
>>> intended to bring greater strength through greater unity, but opening to a
>>> larger constituency can sometimes dilute focus. O'Neill had a clear vision,
>>> and it is sad how it is not so visible to the world now as it was then.
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> *John K Clark*
>>>
>>>
>>>
>>>
>>>
>>>
>>>
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>
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