Results 321 to 330 of about 4,760,446 (357)
Some of the next articles are maybe not open access.
2012
Astrobiology is an exciting interdisciplinary field that seeks to answer one of the most important and profound questions: are we alone? In this volume, leading international experts explore the frontiers of astrobiology, investigating the latest research questions that will fascinate a wide interdisciplinary audience at all levels.
Raymond, Sean N., Benz, W.
openaire +3 more sources
Astrobiology is an exciting interdisciplinary field that seeks to answer one of the most important and profound questions: are we alone? In this volume, leading international experts explore the frontiers of astrobiology, investigating the latest research questions that will fascinate a wide interdisciplinary audience at all levels.
Raymond, Sean N., Benz, W.
openaire +3 more sources
Icarus, 1968
Abstract The possibility of formating a planetary system, starting from a diffuse rotating cloud of gas and dust, as a result of accretion by a proto-Sun is investigated. It is found that a ring of relatively high density is formed in the equatorial plane of the proto-Sun gas cloud system.
B. W. Pendred, Iwan P. Williams
openaire +2 more sources
Abstract The possibility of formating a planetary system, starting from a diffuse rotating cloud of gas and dust, as a result of accretion by a proto-Sun is investigated. It is found that a ring of relatively high density is formed in the equatorial plane of the proto-Sun gas cloud system.
B. W. Pendred, Iwan P. Williams
openaire +2 more sources
The formation of the sun and planets
Icarus, 1962The evidence concerning the presence of the products of extinct radioactivities in meteorites and in the atmosphere is reviewed and analyzed. Such radioactivities are assumed to be present in the interstellar medium when condensation to form the solar system begins.
A. G. W. Cameron, A. G. W. Cameron
openaire +3 more sources
Formation and Evolution of Planets
Astrophysics and Space Science, 1994The basic stages of the formation of the planets are considered. Decay of turbulence in the solar nebula allows the precipitation of dust particles to the solar nebula’s equatorial plane, their growth occurring by sticking at collisions and transformation into kilometer-sized bodies (planetesimals) partly by direct growth and partly via gravitational ...
V. S. Safronov, E. L. Ruskol
openaire +2 more sources
Mass inventory of the giant-planet formation zone in a solar nebula analogue
Nature Astronomy, 2017The initial mass distribution in the solar nebula is a critical input to planet formation models that seek to reproduce today’s Solar System1. Traditionally, constraints on the gas mass distribution are derived from observations of the dust emission from
Ke Zhang +4 more
semanticscholar +1 more source
Formation of Stars and Planets
Astronomische Nachrichten, 2004A01 Modeling the Resonant Planetary System GJ 876 A02 First Classification of Dusty Protoplanets A03 IDL-Models of Infrared Emission from Dust Objects (Applied to Dust in Comets) A04 Theoretical Predicitions and Observational Tests of the Migration Hypothesis A05 Towards Characterization of Exoplanetary Spectra with the VLT ...
Günther Wuchterl, Eike W. Guenther
openaire +3 more sources
Vistas in Astronomy, 1980
Abstract There are discussed briefly the following topics concerning the formation of the planets: 1.Formation of the protoplanetary nebula from a rotating interstellar magnetic cloud 2.The mass and temperature distribution in the protoplanetary nebula 3.The formation of planets by colliding planetesimals and by gas accretion 4.The distances, spin ...
openaire +2 more sources
Abstract There are discussed briefly the following topics concerning the formation of the planets: 1.Formation of the protoplanetary nebula from a rotating interstellar magnetic cloud 2.The mass and temperature distribution in the protoplanetary nebula 3.The formation of planets by colliding planetesimals and by gas accretion 4.The distances, spin ...
openaire +2 more sources
2007
The origin of the Sun's planetary system is a long-standing problem but one whose solution may be in sight. Recent progress has been rapid and much has changed since the first edition of this book. This article will describe a reasonably coherent story for the formation of the planets, based on what people know today, with the obvious caveat that ...
openaire +3 more sources
The origin of the Sun's planetary system is a long-standing problem but one whose solution may be in sight. Recent progress has been rapid and much has changed since the first edition of this book. This article will describe a reasonably coherent story for the formation of the planets, based on what people know today, with the obvious caveat that ...
openaire +3 more sources
Formation of the terrestrial planets
Earth, Moon, and Planets, 1994The early phases of formation in the inner solar system were dominated by collisions and short-range dynamical interactions among planetesimals. But the later phases, which account for most of the differences among planets, are unsure because the dynamics are more subtle. Jupiter’s influence became more important, leading to drastic clearing out of the
openaire +2 more sources
2001
This chapter presents the main characteristics of the formation scenario of the solar system. The fist sections summarize the observational constaints and the input of stellar physics, and reviewprevious formation models. The next section describes the currently accepted model, based on the collapse of a protoplanetary nebula into a disk and the ...
openaire +2 more sources
This chapter presents the main characteristics of the formation scenario of the solar system. The fist sections summarize the observational constaints and the input of stellar physics, and reviewprevious formation models. The next section describes the currently accepted model, based on the collapse of a protoplanetary nebula into a disk and the ...
openaire +2 more sources