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To achieve interstellar travel, the Kline Directive instructs us to be bold, to explore what others have not, to seek what others will not, to change what others dare not. To extend the boundaries of our knowledge, to advocate new methods, techniques and research, to sponsor change not status quo, on 5 fronts:

1. Legal Standing. 2. Safety Awareness. 3. Economic Viability. 4. Theoretical-Empirical Relationship. 5. Technological Feasibility.

In Part 1 of this post I will explore Theoretical-Empirical Relationship. Not theoretical relationships, not empirical relationships but theoretical-empirical relationships. To do this let us remind ourselves what the late Prof. Morris Kline was getting at in his book Mathematics: The Loss of Certainty, that mathematics has become so sophisticated and so very successful that it can now be used to prove anything and everything, and therefore, the loss of certainty that mathematics will provide reasonability in guidance and correctness in answers to our questions in the sciences.

History of science shows that all three giants of science of their times, Robert Boyle, Isaac Newton & Christiaan Huygens believed that light traveled in aether medium, but by the end of the 19th century there was enough experimental evidence to show aether could not be a valid concept. The primary experiment that changed our understanding of aether was the Michelson–Morley experiment of 1887, which once and for all proved that aether did not have the correct properties as the medium in which light travels.

Only after these experimental results were published did, a then unknown Albert Einstein, invent the Special Theory of Relativity (SRT) in 1905. The important fact to take note here is that Einstein did not invent SRT out of thin air, like many non-scientists and scientists, today believe. He invented SRT by examining the experimental data to put forward a hypothesis or concept described in mathematical form, why the velocity of light was constant in every direction independent of the direction of relative motion.

But he also had clues from others, namely George Francis FitzGerald (1889) and Hendrik Antoon Lorentz (1892) who postulated length contraction to explain negative outcome of the Michelson-Morley experiment and to rescue the ‘stationary aether’ hypothesis. Today their work is named the Lorentz-Fitzgerald transformation.

So Einstein did not invent the Special Theory of Relativity (SRT) out of thin air, there was a body of knowledge and hypotheses already in the literature. What Einstein did do was to pull all this together in a consistent and uniform manner that led to further correct predictions of how the physics of the Universe works.

(Note: I know my history of science in certain fields of endeavor, and therefore use Wikipedia a lot, not as a primary reference, but as a starting point for the reader to take off for his/her own research.)

Previous post in the Kline Directive series.

Next post in the Kline Directive series.

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Benjamin T Solomon is the author & principal investigator of the 12-year study into the theoretical & technological feasibility of gravitation modification, titled An Introduction to Gravity Modification, to achieve interstellar travel in our lifetimes. For more information visit iSETI LLC, Interstellar Space Exploration Technology Initiative.

Solomon is inviting all serious participants to his LinkedIn Group Interstellar Travel & Gravity Modification.

The Kline Directive: Economic Viability

Posted by Benjamin T. Solomon in business, complex systems, defense, economics, education, engineering, finance, military, nuclear weapons, philosophy, physics, policy, scientific freedom, space, sustainabilityTagged , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , | 11 Comments on The Kline Directive: Economic Viability

To achieve interstellar travel, the Kline Directive instructs us to be bold, to explore what others have not, to seek what others will not, to change what others dare not. To extend the boundaries of our knowledge, to advocate new methods, techniques and research, to sponsor change not status quo, on 5 fronts:

1. Legal Standing. 2. Safety Awareness. 3. Economic Viability. 4. Theoretical-Empirical Relationship. 5. Technological Feasibility.

In this post I will explore Economic Viability. I have proposed the Interstellar Challenge Matrix (ICM) to guide us through the issues so that we can arrive at interstellar travel sooner, rather than later. Let us review the costs estimates of the various star drives just to reach the velocity of 0.1c, as detailed in previous blog posts:

Interstellar Challenge Matrix (Partial Matrix)

Propulsion Mechanism Legal? Costs Estimates
Conventional Fuel Rockets: Yes Greater than US$1.19E+14
Antimatter Propulsion: Do Not Know. Between US$1.25E+20 and US$6.25E+21
Atomic Bomb Pulse Detonation: Illegal. This technology was illegal as of 1963 per Partial Test Ban Treaty Between $2.6E12 and $25.6E12 . These are Project Orion original costs converted back to 2012 dollar. Requires anywhere between 300,000 and 30,000,000 bombs!!
Time Travel: Do Not Know. Requires Exotic Matter, therefore greater than antimatter propulsion costs of US$1.25E+20
Quantum Foam Based Propulsion: Do Not Know. Requires Exotic Matter, therefore greater than antimatter propulsion costs of US$1.25E+20
Small Black Hole Propulsion: Most Probably Illegal in the Future Using CERN to estimate. At least US$9E+9 per annual budget. CERN was founded 58 years ago in 1954. Therefore a guestimate of the total expenditure required to reach its current technological standing is US$1.4E11.

Note Atomic Bomb numbers were updated on 10/18/2012 after Robert Steinhaus commented that costs estimates “are excessively high and unrealistic”. I researched the topic and found Project Orion details the costs, of $2.6E12 to $25.6E12, which are worse than my estimates.

These costs are humongous. The Everly Brothers said it the best.

Let’s step back and ask ourselves the question, is this the tool kit we have to achieve interstellar travel? Are we serious? Is this why DARPA — the organization that funds many strange projects — said it will take more than a 100 years? Are we not interested in doing something sooner? What happened to the spirit of the Kline Directive?

From a space exploration perspective economic viability is a strange criterion. It is not physics, neither is it engineering, and until recently, the space exploration community has been government funded to the point where realistic cost accountability is nonexistent.

Don’t get me wrong. This is not about agreeing to a payment scheme and providing the services as contracted. Government contractors have learned to do that very well. It is about standing on your own two feet, on a purely technology driven commercial basis. This is not an accounting problem, and accountants and CFOs cannot solve this. They would have no idea where to start. This is a physics and engineering problem that shows up as an economic viability problem that only physicists and engineers can solve.

The physics, materials, technology and manufacturing capability has evolved so much that companies like Planetary Resources, SpaceX, Orbital Sciences Corp, Virgin Galactic, and the Ad Astra Rocket Company are changing this economic viability equation. This is the spirit of the Kline Directive, to seek out what others would not.

So I ask the question, whom among you physicist and engineers would like to be engaged is this type of endeavor?

But first, let us learn a lesson from history to figure out what it takes. Take for example DARPA funding of the Gallium Arsenide. “One of DARPA’s lesser known accomplishments, semiconductor gallium arsenide received a push from a $600-million computer research program in the mid-1980s. Although more costly than silicon, the material has become central to wireless communications chips in everything from cellphones to satellites, thanks to its high electron mobility, which lets it work at higher frequencies.”

In the 1990s Gallium Arsenide semiconductors were so expensive that “silicon wafers could be considered free”. But before you jump in and say that is where current interstellar propulsion theories are, you need to note one more important factor.

The Gallium Arsenide technology had a parallel commercially proven technology in place, the silicon semiconductor technology. None of our interstellar propulsion technology ideas have anything comparable to a commercially successful parallel technology. (I forgot conventional rockets. Really?) A guesstimate, in today’s dollars, of what it would cost to develop interstellar travel propulsion given that we already had a parallel commercially proven technology, would be $1 billion, and DARPA would be the first in line to attempt this.

Given our theoretical physics and our current technological feasibility, this cost analysis would suggest that we require about 10 major technological innovations, each building on the other, before interstellar travel becomes feasible.

That is a very big step. Almost like reaching out to eternity. No wonder Prof Adam Franks in his July 24, 2012 New York Times Op-Ed, Alone in the Void, wrote “Short of a scientific miracle of the kind that has never occurred, our future history for millenniums will be played out on Earth”.

Therefore, we need to communicate to the theoretical physics community that they need get off the Theory of Everything locomotive and refocus on propulsion physics. In a later blog posting I will complete the Interstellar Challenge Matrix (ICM). Please use it to converse with your physicist colleagues and friends about the need to focus on propulsion physics.

In the spirit of the Kline Directive — bold, explore, seek & change — can we identify the 10 major technological innovations? Wouldn’t that keep you awake at night at the possibility of new unthinkable inventions that will take man where no man has gone before?

PS. I was going to name the Interstellar Challenge Matrix (ICM), the Feasibility Matrix for Interstellar Travel (FMIT), then I realized that it would not catch on at MIT, and decided to stay with ICM.

Previous post in the Kline Directive series.

Next post in the Kline Directive series.

—————————————————————————————————

Benjamin T Solomon is the author & principal investigator of the 12-year study into the theoretical & technological feasibility of gravitation modification, titled An Introduction to Gravity Modification, to achieve interstellar travel in our lifetimes. For more information visit iSETI LLC, Interstellar Space Exploration Technology Initiative.

Solomon is inviting all serious participants to his LinkedIn Group Interstellar Travel & Gravity Modification.

Congratulations Skydiver Felix Baumgartner, on the success of your 24 mile skydive. You proved that it is possible to bail out of a space ship and land on Earth safely.

The records are nice to have but the engineering was superb!

To achieve interstellar travel, the Kline Directive instructs us to be bold, to explore what others have not, to seek what others will not, to change what others dare not. To extend the boundaries of our knowledge, to advocate new methods, techniques and research, to sponsor change not status quo, on 5 fronts:

1. Legal Standing. 2. Safety Awareness. 3. Economic Viability. 4. Theoretical-Empirical Relationship. 5. Technological Feasibility.

In this post I will explore Legal Standing.

With respect to space exploration, the first person I know of who pushed the limits of the law is Mr. Gregory W. Nemitz of The Eros Project. He started this project in March 2000. As a US taxpayer, Nemitz made the claim that he is the Owner of Asteroid 433, Eros, and published his claim about 11 months prior to NASA landing its “NEAR Shoemaker” spacecraft on this asteroid.

Within a few days of the NEAR Shoemaker spacecraft landing on his property, Nemitz sent an invoice for twenty dollars to NASA, for parking and storage fees at twenty cents per year, payable in one century installments.

Citing faulty interpretation of the Outer Space Treaty of 1967, NASA refused to pay the fees required by Nemitz. This issue then proceeded to court. Unfortunately, on April 26, 2004 U.S. District Court Judge Howard McKibben Ordered the case to be dismissed.

The moral of this real story is that you don’t have to be a high flying physicist, planetary geologist, astrobiologist or propulsion engineer to advocate &/or sponsor interstellar travel initiatives. You could even be a retired coastguard, and miraculous things might happen.

Congratulations Gregory Nemitz for trying something nobody else dared to do in the spirit of the Kline Directive.

Planetary Resources, Inc. whose founders are Eric Anderson and Peter H. Diamandis could possibly provide the second challenge to space law. How? The “treaty also states that the exploration of outer space shall be done to benefit all countries” … you see where I’m going with asteroid mining?

I’m not an attorney, but these are things we need to watch for. In the light of Planetary Resources objectives and activities Nemitz’s parking fee case poses some dilemmas. First, if the US Government will not stand up for its citizens or entities, what is to stop other governments from imposing taxes for mining what is “to benefit all countries”?

Unfriendly governments will be quick to realize that they have nothing to lose and everything to gain by pursuing such claims in international courts, and through UN organizations.

Second, the judicial system could not intervene because, were it to agree, then everyone would have a claim to outer space property without investing in their claim. That would be like saying John Doe, during the gold rush of the 1840s & 1850s, could claim half of California but had no intention to exercise his mining rights.

Everything hinges on what one could consider an ‘investing’. The Homestead Acts of 1862 to 1909 would be a useful analog. These Acts gave an applicant ownership at no cost of farmland called a “homestead” to anyone who had never taken up arms against the U.S. government, had to be 21 or older or the head of a family, live on the land for five years, and show evidence of having made improvements.

So what would an interplanetary equivalent be? You, the reader could propose your version. Here is a first pass at it. There are two parts:

1. Asteroids: An applicant may claim ownership to an asteroid, provided the claimant had never taken up arms against the U.S. government, and can exercise the claim by placing a token of claimant’s ownership on the claimed asteroid within 1,000 Earth days or equivalent, of submitting the claim. Upon placing the token on the asteroid, the claimant is then given 2,000 Earth days or equivalent, to show evidence of having developed the commercial value of the asteroid.

Failure to comply will cause the claim to be null & void and return the asteroid to the public for future applicants to claim the property.

2. Planetary Resources: An applicant may claim ownership of up to 25 km2 of planetary surface, and the mineral & water rights within the area, provided the claimant had never taken up arms against the U.S. government, and can exercise the claim by placing a token of claimant’s ownership on the claimed planetary surface within 1,000 Earth days or equivalent, of submitting the claim. Upon placing the token on the planetary surface, the claimant is then given 2,000 Earth days or equivalent, to show evidence of having developed the commercial value of this planetary surface.

Failure to comply will cause the claim to be null & void and return the planetary surface to the public for future applicants to claim the property.

In the case of gaseous planets like Jupiter, the claim shall be limited to 25 km3 at specified altitudes, longitudes, and latitutes.

Planetary Resources, Inc. I wish you the best.

Previous post in the Kline Directive series.

Next post in the Kline Directive series.

—————————————————————————————————

Benjamin T Solomon is the author & principal investigator of the 12-year study into the theoretical & technological feasibility of gravitation modification, titled An Introduction to Gravity Modification, to achieve interstellar travel in our lifetimes. For more information visit iSETI LLC, Interstellar Space Exploration Technology Initiative.

Solomon is inviting all serious participants to his LinkedIn Group Interstellar Travel & Gravity Modification.

Science and engineering are hard to do. If it wasn’t we would have a space bridge from here to the Moon by now. If you don’t have the real world practical experience doing either science or engineering you won’t understand this, or the effort and resources companies like Boeing, Lockheed, SpaceX, Orbital Sciences Corp, Scaled Composites, Virgin Galactic, and the Ad Astra Rocket Company have put into their innovations and products to get to where they are, today.

If we are to achieve interstellar travel, we have to be bold.
We have to explore what others have not.
We have to seek what others will not.
We have to change what others dare not.

The dictionary definition of a directive is, an instruction or order, tending to direct or directing, and indicating direction.

Dictionary of Military and Associated Terms, US Department of Defense 2005, provides three similar meanings,

1. A military communication in which policy is established or a specific action is ordered.
2. A plan issued with a view to putting it into effect when so directed, or in the event that a stated contingency arises.
3. Broadly speaking, any communication which initiates or governs action, conduct, or procedure.

In honor of the late Prof. Morris Kline who authored Mathematics: The Loss of Certainty, I have named what we need to do to ensure the success of our endeavors for interstellar space travel, as the Kline Directive.

His book could be summarized into a single statement, that mathematics has become so sophisticated and so very successful that it can now be used to prove anything and everything, and therefore, the loss of certainty that mathematics will provide reasonability in guidance and correctness in answers to our questions in the sciences.

To achieve interstellar travel, the Kline Directive instructs us to be bold, to explore what others have not, to seek what others will not, to change what others dare not.

To extend the boundaries of our knowledge, to advocate new methods, techniques and research, to sponsor change not status quo, on 5 fronts:

1. Legal Standing.
2. Safety Awareness.
3. Economic Viability.
4. Theoretical-Empirical Relationship.
5. Technological Feasibility.

I will explore each of these 5 fronts on how we can push the envelop to reach the stars sooner rather than later.

Next post in the Kline Directive series

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Benjamin T Solomon is the author & principal investigator of the 12-year study into the theoretical & technological feasibility of gravitation modification, titled An Introduction to Gravity Modification, to achieve interstellar travel in our lifetimes. For more information visit iSETI LLC, Interstellar Space Exploration Technology Initiative.

Solomon is inviting all serious participants to his LinkedIn Group Interstellar Travel & Gravity Modification.

The shift that has happened in 40 years which mainly has to do with climate change. Forty years ago, I could say in the Whole Earth Catalog, “we are as gods, we might as well get good at it”. Photographs of earth from space had that god-like perspective.

What I’m saying now is we are as gods and have to get good at it. Necessity comes from climate change, potentially disastrous for civilization. The planet will be okay, life will be okay. We will lose vast quantities of species, probably lose the rain forests if the climate keeps heating up. So it’s a global issue, a global phenomenon. It doesn’t happen in just one area. The planetary perspective now is not just aesthetic. It’s not just perspective. It’s actually a world-sized problem that will take world sized solutions that involves forms of governance we don’t have yet. It involves technologies we are just glimpsing. It involves what ecologists call ecosystem engineering. Beavers do it, earthworms do it. They don’t usually do it at a planetary scale. We have to do it at a planetary scale. A lot of sentiments and aesthetics of the environmental movement stand in the way of that.

Continue reading “We are as Gods…” and watch the video interview

On January 28 2011, three days into the fierce protests that would eventually oust the Egyptian president Hosni Mubarak, a Twitter user called Farrah posted a link to a picture that supposedly showed an armed man as he ran on a “rooftop during clashes between police and protesters in Suez”. I say supposedly, because both the tweet and the picture it linked to no longer exist. Instead they have been replaced with error messages that claim the message – and its contents – “doesn’t exist”.

Few things are more explicitly ephemeral than a Tweet. Yet it’s precisely this kind of ephemeral communication – a comment, a status update, sharing or disseminating a piece of media – that lies at the heart of much of modern history as it unfolds. It’s also a vital contemporary historical record that, unless we’re careful, we risk losing almost before we’ve been able to gauge its importance.

Consider a study published this September by Hany SalahEldeen and Michael L Nelson, two computer scientists at Old Dominion University. Snappily titled “Losing My Revolution: How Many Resources Shared on Social Media Have Been Lost?”, the paper took six seminal news events from the last few years – the H1N1 virus outbreak, Michael Jackson’s death, the Iranian elections and protests, Barack Obama’s Nobel Peace Prize, the Egyptian revolution, and the Syrian uprising – and established a representative sample of tweets from Twitter’s entire corpus discussing each event specifically.

It then analysed the resources being linked to by these tweets, and whether these resources were still accessible, had been preserved in a digital archive, or had ceased to exist. The findings were striking: one year after an event, on average, about 11% of the online content referenced by social media had been lost and just 20% archived. What’s equally striking, moreover, is the steady continuation of this trend over time. After two and a half years, 27% had been lost and 41% archived.

Continue reading “The decaying web and our disappearing history”

Scientific discovery in the natural sciences has proceeded at an exponential rate and we are now seeing the social sciences experience a profound transformation as a consequence of computational social science. How far computational social science will reinvent social science is the big question. Some of the themes I’ve explored in my own work have been about the relationship between political philosophy and science and whether the computational sciences can help formulate new conceptions of societal organisation. Many in the field seem to think so.

These three things—a biological hurricane, computational social science, and the rediscovery of experimentation—are going to change the social sciences in the 21st century. With that change will come, in my judgment, a variety of discoveries and opportunities that offer tremendous prospect for improving the human condition. It’s one thing to say that the way in which we study our object of inquiry, namely humans, is undergoing profound change, as I think it is. The social sciences are indeed changing. But the next question is: is the object of inquiry also undergoing profound change? It’s not just how we study it that’s changing, which it is. The question is: is the thing itself, our humanity, also changing? (Nicholas A. Christakis, A NEW KIND OF SOCIAL SCIENCE FOR THE 21st CENTURY)

A biological understanding of human nature combined with new insights derived from computational social science can potentially revolutionise political, social and economic systems. Consequently there are profound philosophical implications. Secular political philosophy specifically emerged out of the European experience of Church and monarchical rule, and socialism emerged out of the experience of industrialisation and capitalist ideology. Therefore is it possible that a new political philosophy could emerge out of the reinvention of the social sciences?

One question that fascinated me in the last two years is, can we ever use data to control systems? Could we go as far as, not only describe and quantify and mathematically formulate and perhaps predict the behavior of a system, but could you use this knowledge to be able to control a complex system, to control a social system, to control an economic system? (Albert-lászló Barabási, THINKING IN NETWORK TERMS)

With Big Data we can now begin to actually look at the details of social interaction and how those play out, and are no longer limited to averages like market indices or election results. This is an astounding change. The ability to see the details of the market, of political revolutions, and to be able to predict and control them is definitely a case of Promethean fire — it could be used for good or for ill, and so Big data brings us to interesting times. We’re going to end up reinventing what it means to have a human society. (Alex (Sandy) Pentland, REINVENTING SOCIETY IN THE WAKE OF BIG DATA)

Edge has an excellent discussion exploring computational social science and how it could transform humanity. One of the exciting challenges I see will be to integrate the exponential discoveries in the natural sciences with the social sciences, and to truly build a civilisation upon rationality.

EOH events are events that cause the irreversible termination of humanity. They are not events that start the physical destruction of humanity (that would be too late), but fundamental, non-threatening and inconspicuous events that eventually lead to the irreversible physical destruction of humanity. Using nations and civilizations I explain how.

(1) Fundamental: These events have to be fundamental to the survival of the human species or else they cannot negatively impact the foundation of humanity’s existence.

On a much smaller scale drought and war can and have destroyed nations and civilizations. However, that is not always the case. For example, it is still not know what caused the demise of the Mayan civilization.

The act of war can lead to the irreversible destruction of a nation or civilization, but the equivalent EOH event lay further back in history, and can only be answered by the questions who and why.

For example, the assassination of Archduke Franz Ferdinand of Austria is the EOH event that triggered a domino effect which started with Austria-Hungary’s declaration of war against Serbia, and Central Powers (including Germany and Austria-Hungary) and the Allies of World War I (countries allied with Serbia) to declare war on each other, starting World War I.

In this case Europe was not destroyed as it still had the capability to rebuild, but it led to massive loss of human lives.

Lesson: This illustrates that an EOH event acts like a trigger. Therefore, EOH events must have the capability to trigger destruction in such a manner as to annihilate the capability to rebuild, too.

(2) Non-Threatening: They have to be non-threatening or else these types of events cannot take hold and become main stream.

The Hindu numeral system designed for positional notation in a decimal system, invented (trigger event) in India, was transmitted via the Arab traders to Europe where it took root, and bloomed into the counting and mathematical systems we now accept universally.

Note, the Roman Empire, essentially Southern Europe, Mediterranean and parts of the Middle East, used a comparatively awkward system, by contrast, and this has not survived into general usage today.

The development of mathematics in a Europe, hungry not to be left behind, led to the development of the sciences and engineering not envisioned by India. And several hundred years later came back to India in the form of the British Raj, and changed how Indians live.

Lesson: This illustrates that for an EOH event to prosper it requires a conducive environment – in this case a Europe hungry not to be left behind.

(3) Inconspicuous: They have to be inconspicuous to facilitate the chain reaction of irreversible events. If these events were visible to the majority of humanity when they occur, people could intervene and prevent these chain reactions to irreversible destruction of humanity.

The 9/11 attacks on the Twin World Trade Towers was inconspicuous simply because no one believed that commercial airplanes could be used as weapons of destruction. The subsequent chain reaction, the sequential collapse of building floors, lend to destruction and major loss of lives.

Lesson: Inconspicuous does not necessarily mean ‘cannot be seen’ as the 9/11 example illustrates that it would also encompass ‘cannot be believed’.

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In summary an EOH event is a non-threatening inconspicuous trigger in a conducive environment, that chain reacts into irreversible physical destruction of the foundations of humanity in a manner that prevents rebuilding.

By this definition there are two EOH events within our comprehension.

The first that comes to mind is the irreversible expansion of our Sun into a red giant will lead to the total destruction of humanity with the inability to rebuild if we remain on Earth, and is triggered by the inconspicuous exhaustion of hydrogen in the Sun’s core which switches to the thermonuclear fusion chain reaction of hydrogen.

Therefore, the EOH event is the exhaustion of hydrogen.

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The second are experiments in small black hole production. The hypothesis that small black holes can be used for interstellar propulsion (https://lifeboat.com/blog/2012/09/debunking-the-black-hole-interstellar-drive) lends a conducive environment to trigger the funding for such experiments. The realization of small black holes without experimentally proven controls will lead to the irreversible chain reaction of black hole growth as it consumes matter around it at increasingly faster rates. This will result in the complete destruction of humanity and everything within our reach, in manner we cannot rebuild.

Therefore, the EOH event is the approval of funding into small black hole experimental research. And with CERN we have achieved an EOH event.

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Benjamin T Solomon is the author & principal investigator of the 12-year study into the theoretical & technological feasibility of gravitation modification, titled An Introduction to Gravity Modification, to achieve interstellar travel in our lifetimes. For more information visit iSETI LLC, Interstellar Space Exploration Technology Initiative.

Solomon is inviting all serious participants to his LinkedIn Group Interstellar Travel & Gravity Modification.

Tim Ventura told me 2 days ago that American Antigravity is back. Congratulations Tim. Yours was a very popular site and it was a loss when it went dark.

Welcome back Tim. I look forward to more scoops from American Antigravity.

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Benjamin T Solomon is the author & principal investigator of the 12-year study into the theoretical & technological feasibility of gravitation modification, titled An Introduction to Gravity Modification, to achieve interstellar travel in our lifetimes. For more information visit iSETI LLC, Interstellar Space Exploration Technology Initiative.

Solomon is inviting all serious participants to his LinkedIn Group Interstellar Travel & Gravity Modification.