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  • Planets
  • The primary goal of PLATO (PLAnetary Transits and Oscillations of stars) is to open a new way in exoplanetary science by detecting terrestrial exoplanets and characterising their bulk properties, including planets in the habitable zone of Sun-like stars. (esa.int)
  • It requires knowledge of the planetary composition, to distinguish terrestrial planets from non-habitable gaseous mini-Neptunes, and of the atmospheric properties of planets. (esa.int)
  • This animation illustrates the Kepler-223 planetary system, which has long-term stability because its four planets interact gravitationally to keep the beat of a carefully choreographed dance as they orbit their host star. (phys.org)
  • Exactly how and where planets form is an outstanding question in planetary science ," said the study's lead author, Sean Mills, a graduate student in astronomy & astrophysics at the University of Chicago. (phys.org)
  • The Kepler-223 system provides alternative scenarios for how planets form and migrate in a planetary system that is different from our own, said study co-author Howard Isaacson, a research astronomer at the University of California, Berkeley, and member of the California Planet Search Team. (phys.org)
  • Behavior of dusts and evolution of the protosolar disk are responsible for composition of planetesimals, which further affects the composition of planets. (uni-muenchen.de)
  • Modern observational data on stellar evolution, disc formation, and the discovery of extrasolar planets, as well as mechanical and cosmochemical properties of the solar system, place important constraints on the different scenarios developed, each supporting the basic cosmogony concept (as rooted in the Kant-Laplace hypothesis). (oxfordre.com)
  • To do so we firstly have to understand how in general planets (solar system and extrasolar) evolve in time and how this evolution depends on their host star (stellar class and metallicity: Iron, magnesium, silicon, carbon and oxygen to hydrogen ratios), the planet's mass and the orbital characteristics. (dlr.de)
  • The chapter discusses current models for the formation of giant planets and their satellites and reviews major Cassini findings which help advance our understanding of the system's formation and evolution to its current state. (springer.com)
  • habitability
  • PLATO will provide the key information (planet radii, mean densities, stellar irradiation, and architecture of planetary systems) needed to determine the habitability of these unexpectedly diverse new worlds. (esa.int)
  • He is well known as a world leader in the field of planetary habitability for his efforts to define the liquid water habitable zone around stars using one-dimensional, globally averaged climate models. (nap.edu)
  • Planetary climates are fragile and the last two decades of research indicate that surface habitability is a highly complex phenomenon, which might be rare in the universe. (dlr.de)
  • Next to this we also want to know how these processes that might create subsurface habitability interact with the dynamics, i.e. the thermal evolution and the tectonic mode of the planet. (dlr.de)
  • circumstellar
  • The discovery of circumstellar discs and especially planetary systems around other stars put this challenging problem of modern astronomy on new ground and allowed us to integrate different theoretical views alongside the data of observations and computer modeling to more coherent concepts. (oxfordre.com)
  • radii
  • Characterization of the planet host stars and the assessment of the photometric blending of the host stars with bound and background stars is crucial to the accurate determination of the stellar and planetary radii. (caltech.edu)
  • Consciousness
  • On the basis of his work summarized in the volume "The Evolving Self," Professor Mih├íly Csikszentmihalyi will review the history of human evolution from circa two million years ago to the present, focusing on the development of consciousness, or the ability of the human mind to simulate possible courses of action, to create new ideas and objects, and to transcend the material structures in which human life is embedded. (houstonpress.com)
  • OCCUPY is the first sign of a planetary consciousness and the change it will begin. (blogtalkradio.com)
  • atmospheric
  • The fact that the evolution and persistence of all the higher-ordered living states that have been the typical objects of evolutionary study (e.g., sexually reproducing animals) are dependent on a rich and steady supply of atmospheric oxygen makes them dependent upon the prior evolution and persistence of life at the planetary level for their existence. (entropylaw.com)
  • Topics that will be discussed include: the evolution of the atmosphere, global temperature variation, sea level change, atmospheric trace gases and global warming, stratospheric ozone, acid rain and tropospheric ozone, human migration and landscape development, and global catastrophes. (dartmouth.edu)
  • phase
  • It has also been suggested that superwinds are a natural and necessary transition phase in the evolution from an IR luminous galaxy to QSO. (caltech.edu)
  • biosphere
  • More precisely, they are internal productions of the larger planetary process or, in Vernadsky's (1929, p. 489) words they are regular 'functions' of the biosphere. (entropylaw.com)
  • By examining how the biosphere has interacted with key geochemical and geophysical processes over this time, this course investigates how the evolution of the biosphere and geosphere has been a synergistic process throughout the entire history of the Earth that continues today. (dartmouth.edu)
  • stars
  • Galactic-scale winds, or 'Superwinds', driven by the collective effect of massive stars and supernovae, have been invoked as a source for the heating and metal-enrichment of both the intra-cluster and inter-galactic medium, as a critical factor in the evolution of galaxies, and as the source of the mass-metallicity relation for galaxies. (caltech.edu)
  • We are looking for a student with experience in high spatial resolution imaging to analyse the speckle and AO data for all of the Kepler planet hosting stars (along with a control sample of stars) to determine the stellar multiplicity rates of the Kepler stars, the true sizes of the planetary candidates, and the relationship between stellar multiplicity and planetary occurrence. (caltech.edu)
  • disk
  • In addition to the planet, the star hosts a disk of planetary debris, seen as a bright ring encircling the star. (phys.org)
  • course
  • These energy expansions have also mediated the transformation of key aspects of the planetary environment, which have in turn mediated the future course of evolutionary change. (nature.com)
  • study
  • 2018): Modelling the evolution of the parent body of acapulcoites and lodranites: A case study for partially differentiated asteroids. (dlr.de)
  • second
  • of increasingly more highly ordered states constitute an increasing departure of the global system from equilibrium, again, as Fisher noted, running opposite to that generally assumed to be the predicted direction for physical evolution according to the second law. (entropylaw.com)