Results 21 to 30 of about 61,335 (267)

PLANET-PLANET SCATTERING IN PLANETESIMAL DISKS [PDF]

open access: yesThe Astrophysical Journal, 2009
We study the final architecture of planetary systems that evolve under the combined effects of planet-planet and planetesimal scattering. Using N-body simulations we investigate the dynamics of marginally unstable systems of gas and ice giants both in isolation and when the planets form interior to a planetesimal belt.
Raymond, Sean N.   +2 more
openaire   +2 more sources

Ontosonographic Maps: Toward a Theoretization of Soundscape Forms in the Anthropocene Epoch

open access: yesEtnoantropološki Problemi, 2021
This paper deals with the ways in which it is possible to conceptualize and map forms of soundscape in the epoch of the Anthropocene. After humans became a geological force, which is a role that used to be reserved for the planet itself, one can pose the
Andrija Filipović
doaj   +1 more source

Dynamical Outcomes of Planet‐Planet Scattering [PDF]

open access: yesThe Astrophysical Journal, 2008
Observations in the past decade have revealed extrasolar planets with a wide range of orbital semimajor axes and eccentricities. Based on the present understanding of planet formation via core accretion and oligarchic growth, we expect that giant planets often form in closely packed configurations.
Chatterjee, Sourav   +3 more
openaire   +3 more sources

The Astrobiology of Alien Worlds: Known and Unknown Forms of Life

open access: yesUniverse, 2020
Most definitions of life assume that, at a minimum, life is a physical form of matter distinct from its environment at a lower state of entropy than its surroundings, using energy from the environment for internal maintenance and activity, and capable of
Louis N. Irwin, Dirk Schulze-Makuch
doaj   +1 more source

Disc-planet, planet-planet, and star-planet interactions during planet formation

open access: yes, 2003
In this article we present results from three on-going projects related to the formation of protoplanets in protostellar discs. We present the results of simulations that model the interaction between embedded protoplanets and disc models undergoing MHD turbulence.
Nelson, Richard P.   +1 more
openaire   +2 more sources

Hot Jupiters from secular planet–planet interactions [PDF]

open access: yesNature, 2011
accepted for publication by Nature, 3 figures (version after proof - some typos corrected)
Naoz, Smadar   +4 more
openaire   +3 more sources

Planet–planet scattering in circumstellar gas disks [PDF]

open access: yesAstronomy and Astrophysics, 2010
Astronomy and Astrophysics Letters, in ...
MARZARI, FRANCESCO   +2 more
openaire   +2 more sources

Specific Analysis of Web Camera and High Resolution Planetary Imaging [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2006
Web camera is usually used for video communication between PC, it has small sensing area, cannot using long exposure application, so that is insufficient for astronomical application.
Youngsik Park   +3 more
doaj   +1 more source

Validation of Visually Interpreted Corine Land Cover Classes with Spectral Values of Satellite Images and Machine Learning

open access: yesRemote Sensing, 2021
We analyzed the Corine Land Cover 2018 (CLC2018) dataset to reveal the correspondence between land cover categories of the CLC and the spectral information of Landsat-8, Sentinel-2 and PlanetScope images.
Orsolya Gyöngyi Varga   +7 more
doaj   +1 more source

Environmental and economical ethics collide

open access: yesVoices in Bioethics, 2020
In January 2020, during China’s COVID-19 outbreak, the NASA Earth Observatory captured aerial images indicating significantly lower emissions of nitrogen dioxide (NO2), a major air pollutant, across China’s mainland.[1] Scientists across the globe have ...
Camille Castelyn
doaj   +1 more source

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