(logo) Natural Genesis (logo text)
A Sourcebook for the Worldwide Discovery of a Creative Organic Universe
Table of Contents
Introduction
Genesis Vision
Learning Planet
Organic Universe
Earth Life Emerge
Genesis Future
Glossary
Recent Additions
Search
Submit

III. Ecosmos: A Revolutionary Fertile, Habitable, Solar-Bioplanet, Incubator Lifescape

H. Stellar Planetary Systems: A Stochastic Profusion of Galaxies, Solar Orrerys, and Habitable Zones

Ramirez, Ramses. A More Comprehensive Habitable Zone for Finding Life on Other Planets. Geosciences. Online July, 2018. A contribution to a Planetary Evolution and Search for Life on Habitable Planets special issue, edited by Lena Noack and Ralf Moeller, by an Earth-Life Science Institute, Tokyo University astrophysicist. As our whole Earthkind exoplanet census project rapidly takes off, many papers like this seek better definitions and understandings of hospitable solar and galactic areas for living systems to form, evolve, and maybe reach a global intelligence. Similar to Del Genio, et al above, the fates of Venus and Mars are a good start. Stellar main-sequences, greenhouse gases and relative oxygen levels are further factors.

A contribution to a Planetary Evolution and Search for Life on Habitable Planets special issue, edited by Lena Noack and Ralf Moeller, by an Earth-Life Science Institute, Tokyo University astrophysicist. As our whole Earthkind exoplanet census project rapidly takes off, many papers like this seek better definitions and understandings of hospitable solar and galactic areas for living systems to form, evolve, and maybe reach a global intelligence. Similar to Del Genio, et al above, the fates of Venus and Mars are a good start. Stellar main-sequences, greenhouse gases and relative oxygen levels are further factors.

Rauer, Heike, et al. The PLATO Mission. arXiv:2406.05447.. The main public posting all about the epic ESA planet hunter observance, as the quotes say. Some 200 coauthors such as Conny Aerts, Alessandro Morbidelli and Hans Deeg sight ahead into the 2030s as empowered and informed by a new phase of astronomic search and discover. Our own take would be to attribute the mega project to an Earthropo to Ecosmo sapiensphere on her/his twinity own. Another aspect is a view of candidate worlds and their host star as a whole integrated unit. Altogether the endeavor could imply an intended participatory purpose to achieve a vital description and recognition of a genesis universe.

PLATO (PLAnetary Transits and Oscillations of stars) is ESA's M3 mission designed to detect and characterise extrasolar planets, along with asteroseismic monitoring select stars. With the complement of radial velocity observations from the ground, planets will be viewed for their radius, mass, and age with high accuracy. These features will introduce a comparative exoplanetology which can place our Solar System planets in a broader context. Here we review the science objectives, target samples and fields, and describe the instrument and the mission profile. PLATO is scheduled for a launch date in later 2026. (Excerpt)

PLATO is the M3 mission in the Cosmic Vision 2015-2025 Program of the European Space Agency. With 26 telescopes of 20 cm class, that all together collect photons like a telescope of 1 m class covering a field of view 10,000 times the area of the full Moon, it will survey the brightest stars in the sky for transiting planets. PLATO sensitivity and operation mode will allow the detection of earth analogues - for mass and orbit - orbiting solar-like stars, a task that will not be covered by any other project in this decade. (platomission.com)

Raymond, Sean and Alessandro Morbidelli. Planet Formation: Key Mechanisms and Global Models. arXiv:2002.05756. As global capabilities to explore and quantify a increasing array of eclectic orbital worlds and to reconstruct how they came to form, veteran astrophysicists (search) at the University of Bordeaux and the Cote d’Azur Observatory, Nice post a 103 page, 372 reference copious paper upon the latest findings. It opens with a graphic about Earth and Jupiter which cites dust coagulation, pebble accretion, planetismals, giant impacts, moon making and more and goes on about the masses and orbits of super-Earths, cosmo-chemical growth factors, asteroid compositions, and every other aspect. An impression grows of how wildly stochastic the long, dramatic course of solar systems actually is, which then highlights our own Earth whence a collaborative species is able to achieve its consciously perceived description.

In order to make sense of the origin of the planets we must first understand the origin of their building blocks. The first part presents a detailed description of six key mechanisms of planet formation: 1) The structure and evolution of protoplanetary disks, 2) The formation of planetesimals, 3) Accretion of protoplanets, 4) Orbital migration of growing planets, 5) Gas accretion and giant planet migration, and 6) Resonance trapping during planet migration. The second part of this review shows how global models are built out of planet formation processes by explaining different populations of known planetary systems, including close-in small/low-mass planets (i.e., super-Earths), giant exoplanets, and the Solar System's planets. We discuss the different sources of water on rocky exoplanets, and use cosmochemical measurements to quantify the origin of Earth's water. (Abstract excerpt)

Raymond, Sean, et al. Exotic Earths: Forming Habitable Worlds with Giant Planet Migration. Science. 1414/313, 2006. Within the rush of findings about planet formation, diversity, and movements, the prevalence and role of “hot Jupiters” is contributing to how solar systems contain Earth-like, water and land bearing objects.

Reich, Eugenie Samuel. Beyond the Stars. Nature. 470/24, 2011. Apropos, I caught on C-Span TV a NASA media day (February 1) on the first findings of its Kepler Spacecraft Search for Habitable Planets. Lead scientist Jack Lissauer of NASA Ames, and Yale astronomer Debra Fischer, could hardly contain their excitement about its breakthrough advance beyond Doppler methods which could only detect Jupiter size worlds. As a companion article “A Closely Packed System of Low-Mass, Low-Density Planets Transiting Kepler-11” in the issue (470/53) reports, orbiting this Sun-like star are not only six large objects but five smaller earth-like planets. Launched in March 2009, the mission has exceeded expectations, and as these early results promise, appears to fulfill the historical dream of encountering a friendly cosmos sown with life-hospitable worlds. An illustrated New York Times story by Dennis Overbye “Gazing Afar for Other Earths, and Other Beings” on January 31 further conveys the exhilaration.

What makes this so striking is the satellite’s instruments always point at the same tiny arc of the Milky Way near the constellation called the Northern Cross — only one four-hundredth of the sky. The Kepler team leader, William Borucki, at the Ames Research Center in Northern California, says that if Kepler could see the whole sky, it would have found some 400,000 planets. (NY Times editorial February 7, 2011)

Rodet, Laetita, et al. ODEA: Orbital Dynamics in a Complex Evolving Architecture. arXiv:1909.04536. We cite this entry by University of Grenoble, Stanford University and UC Berkeley researchers as an example of analytic methods such as symplectic integrators being applied even to exoplanetary solar systems. ODEA stands for an algorithm they developed for this purpose. In regard, a take away may be that even heavenly spheres do indeed dance and move to a mathematical score.

Rospars, Jean-Pierre. Terrestrial Biological Evolution and its Implication for SETI. Acta Astronautica. 67/11-12, 2010. In a special issue on Searching for Life Signatures, the French National Institute for Agricultural Research agronomist and director contends that revisions of earthly evolution to rightly perceive its parallel ascent of creatures and cognition can provide a better guide for imagining and encountering extraterrestrial intelligences. In so doing, five cases are made against the reign of pure contingency: that of unicity, optimality, convergences, physical constraints, and macroevolutionary trends. Nextly, four reasons are stated in favor of encephalization: constant recurrence, neural plasticity, complex behaviors, and cultural phenomena. These qualities taken altogether imply that sapient, tool-using humanoids ought to grace a plethora of earth-like neighbors.

A frequent opinion among biologists upholds that biological evolution is contingent and, consequently, that man's apparition is a random event of very small probability. We present various arguments against this view, based on chemistry, molecular biology, evolutionary convergences, the existence of physical constraints on the structure of living beings, and the evidence of acceleration in the evolution of many features, e.g. brain size, over geological times. Taken together they suggest that “laws” of evolution exist and may have a universal validity. (1361)

Sage, Leslie. Exoplanets. Nature. 513/327, 2014. An introduction to a special collection as this celestial spacescape of neighbor worlds increasingly beckons. A main paper is Advances in Exoplanet Science from Kepler by Jack Lissauer, Rebekah Dawson, and Scott Tremaine. See also Exoplanets by Adam Burrows and Geoffrey Marcy in PNAS. herein for a similar, concurrent survey.

Sandford, Emily, et al. On Planetary Systems as Ordered Sequences. arXiv:2105.09966. Astrophysicists ES, Cavendish Laboratory, UK and David Kipping, Columbia University, along with computer scientist Michael Collins, Columbia U. post an overview perception just now possible as myriad worlds are detected across the galaxy. After Gilbert & Fabrycky 2020, it is proposed that entire solar systems ought to be viewed as a unitary network arrangement due to geometric and mathematic patternings. We note this appreciation necessarily implies an intrinsic ecosmic reality.) A further advance is the use of computational linguistics via natural language processing to identify a textual quality. By this extension to planetary objects and host stars, a working analogy is achieved by way of word-like worlds and grammatical conventions that they may express. The paper explains how suitable this identity and correspondence appears to be for all manner and classifications of stellar forms and globular groupings. By this historic synthesis, as sunny stars and orbital orrerys may become the primary ecosmic formation they can take on semblance of an inscribed literary narrative. The 25 page contribution has been accepted by the Monthly Notices of the Royal Astronomical Society.

A planetary system consists of a host star and one or more planets, arranged into a particular configuration. Here, we consider what information belongs to the configuration, or ordering, of 4286 Kepler planets in their 3277 planetary systems. First, we train a neural network model to predict the radius and period of a planet based on the properties of its host star and the radii and period of its neighbors. Second, we adapt a model used for unsupervised part-of-speech tagging in computational linguistics to investigate whether planets or planetary systems fall into natural categories with physically interpretable "grammatical rules." The model identifies two robust groups of planetary systems: (1) compact multi-planet systems and (2) systems around giant stars, although the latter group is strongly sculpted by the selection bias of the transit method. These results reinforce the idea that planetary systems are not random sequences -- instead, as a population, they contain predictable patterns that can provide insight into the formation and evolution of planetary systems. (Abstract)

Here, we have explored two avenues to understanding planetary systems as ordered sequences, in which the arrangement of individual planets contains information beyond that contained in the planets themselves. In other words, we have explored ways to understand planets in the context of their systems - their host star, sibling planets, and their position among them. (22)

Computational linguistics is an interdisciplinary field concerned with the modelling of natural language, as well as the study of appropriate computational approaches to linguistic questions. In general, the endeavor draws upon linguistics, computer science, artificial intelligence, mathematics, logic, philosophy, cognitive science, cognitive psychology, psycholinguistics, anthropology and neuroscience. (Wikipedia)

Sasselov, Dimitar. How We Found Hundreds of Potential Earth-Like Planets. http://www.ted.com/talks/dimitar_sasselov_how_we_found_hundreds_of_potential_earth_like_planets. Circa 2102 the count is into many thousands. A July 2010 TED talk by the Harvard University astronomer and director of the Harvard Origins of Life Initiative who expands on findings by the Kepler Telescope within a novel, imaginative cosmic context. The Copernican revolution of earth orbiting the sun is often seen as starting a long demotion of human centrality that is now engulfed by an abysmal multiverse. But Sasselov reminds that in the 16th century it was conjectured that if home Earth circled a star, then the starry heavens ought to similarly be filled with companion worlds. This alternative view is at last fulfilled: “The galaxy is rich in small, Earth-like planets.” By these lights and vista, as his concluding quotes affirm, life and persons are actually of vast, unrealized importance and promise, if we can just save precious earth for such a creative destiny. See also Sasselov’s January 2012 book Life of Super-Earths: How the Hunt for Alien Worlds and Artificial Cells Will Revolutionize Life on Our Planet.

The universe and life are both in space and time. If that was the age of the universe, then this is the age of life on Earth. Think about those oldest living things on Earth, but in a cosmic proportion. This is not insignificant. This is very significant. So life might be insignificant in size, but it is not insignificant in time. Life and the universe compare to each other like a child and a parent, parent and offspring.

So what does this tell us? This tells us that that insignificance paradigm that we somehow got to learn from the Copernican principle, it's all wrong. There is immense, powerful potential in life in this universe -- especially now that we know that places like the Earth are common. And that potential, that powerful potential, is also our potential, of you and me. And if we are to be stewards of our planet Earth and its biosphere, we'd better understand the cosmic significance and do something about it.

Scharf, Caleb. Extrasolar Planets and Astrobiology. Sausalito, CA: University Science Books, 2009. When a realm of celestial objects, first definitively viewed only in 1995, can merit an excellent, thorough textbook then a certain maturity has been reached. As Director of the Columbia University Astrobiology Center, Scharf dutifully covers all aspects of planetary composition, various atmospheres, habitable zones, prebiotic cosmochemistry, and so on. And it would seem that the implications of such a novel filling in of the cosmic neighborhood, similar to the finding of myriad galaxies in the 1920s and 1930s, has not yet registered. For it reveals a cosmos which by its innate nature spawns a prolific expanse of earth-like abodes for life to generate complex and conscious forms. In the final pages, Scharf indeed broaches a view quite at odds with the current mechanical model, in so many words that an organic genesis universe is being found with its own essence and destiny.

At the start of the book, we posited that life is a phenomenon that emerges in this Universe as naturally as physical “laws,” such as Newtonian gravity. It certainly seems that many of the pieces that go together to enable life as we know it are indeed inevitable. Star and planet formation, and complex carbon chemistry, are generic features of the cosmos, and these appear to be critical for life. (450)

Schneider, Jean, et al. The Far Future of Exoplanet Direct Characterization. Astrobiology. 10/1, 2010. Some 21 space scientists from across Europe and the U. S. look ahead to at last being able, conceivably, meet cousin creatures on other companion worlds.

We describe future steps in the direct characterization of habitable exoplanets subsequent to medium and large mission projects currently underway and investigate the benefits of spectroscopic and direct imaging approaches. We show that, after third- and fourth-generation missions have been conducted over the course of the next 100 years, a significant amount of time will lapse before we will have the capability to observe directly the morphology of extrasolar organisms. (Abstract, 121)

[Prev Pages]   Previous   | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18  Next