Results 71 to 80 of about 42,149 (288)

Did the terrestrial planets of the solar system form by pebble accretion?

open access: yesEarth and Planetary Science Letters
The dominant accretion process leading to the formation of the terrestrial planets of the Solar System is a subject of intense scientific debate. Two radically different scenarios have been proposed. The classic scenario starts from a disk of planetesimals which, by mutual collisions, produce a set of Moon to Mars-mass planetary embryos.
A. Morbidelli, T. Kleine, F. Nimmo
openaire   +2 more sources

The spread of non‐native species

open access: yesBiological Reviews, EarlyView.
ABSTRACT The global redistribution of species through human agency is one of the defining ecological signatures of the Anthropocene, with biological invasions reshaping biodiversity patterns, ecosystem processes and services, and species interactions globally.
Phillip J. Haubrock   +16 more
wiley   +1 more source

Statistical Study of the Early Solar System's Instability with 4, 5 and 6 Giant Planets

open access: yes, 2012
Several properties of the Solar System, including the wide radial spacing and orbital eccentricities of giant planets, can be explained if the early Solar System evolved through a dynamical instability followed by migration of planets in the planetesimal
Agnor   +22 more
core   +3 more sources

Subterranean environments contribute to three‐quarters of classified ecosystem services

open access: yesBiological Reviews, EarlyView.
ABSTRACT Beneath the Earth's surface lies a network of interconnected caves, voids, and systems of fissures forming in rocks of sedimentary, igneous, or metamorphic origin. Although largely inaccessible to humans, this hidden realm supports and regulates services critical to ecological health and human well‐being.
Stefano Mammola   +30 more
wiley   +1 more source

Forming Massive Terrestrial Satellites through Binary-exchange Capture

open access: yesThe Planetary Science Journal
The number of planetary satellites around solid objects in the inner solar system is small either because they are difficult or unlikely to form or because they do not survive for astronomical timescales.
Darren M. Williams, Michael E. Zugger
doaj   +1 more source

Prospects for the habitability of OGLE-2006-BLG-109L

open access: yes, 2008
The extrasolar system OGLE-2006-BLG-109L is the first multiple-planet system to be discovered by gravitational microlensing (Gaudi et al., 2008); the two large planets that have been detected have mass ratios, semimajor axis ratios, and equilibrium ...
David A. Minton   +4 more
core   +1 more source

Spatial metrics in fire ecology: seeking consistency amidst complexity

open access: yesBiological Reviews, EarlyView.
ABSTRACT Technological advances, including remote sensing, have led to a proliferation of metrics used in ecological studies to examine spatial patterns of fire regimes and their ecological effects. Researchers can use many different metrics to analyse spatial variation in both fire events and resulting fire regimes, including fire size, shape ...
Alexander R. Carey   +5 more
wiley   +1 more source

From Dawn till Dusk: How Light Reduces Martian Granular Slope Angles

open access: yesThe Planetary Science Journal
The maximum slope of a granular surface—beyond which particles start to move through avalanches—is determined by the balance of gravitational and interparticle forces and is independent of gravity when only frictional forces act between the particles ...
Laurent Schönau   +7 more
doaj   +1 more source

The Chemical Composition of an Extrasolar Minor Planet

open access: yes, 2007
We report the relative abundances of 17 elements in the atmosphere of the white dwarf star GD 362, material that, very probably, was contained previously in a large asteroid or asteroids with composition similar to the Earth/Moon system. The asteroid may
B. Zuckerman   +7 more
core   +1 more source

Charting the Course: Real‐World Application of Sustainability and Innovation Principles in the Portuguese Blue Economy Firms

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT The blue economy has emerged as a key sector for linking sustainability and innovation, yet existing research has largely overlooked how firms operationalize these processes in practice. This study addresses that gap by asking: How do Portuguese blue economy firms embed sustainability‐oriented innovation (SOI) into their strategies, and what ...
Jennifer Nicole Elston   +2 more
wiley   +1 more source

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