Results 21 to 30 of about 885,801 (233)

Migrating Planets [PDF]

open access: yesScience, 1998
A planet orbiting in a disk of planetesimals can experience an instability in which it migrates to smaller orbital radii. Resonant interactions between the planet and planetesimals remove angular momentum from the planetesimals, increasing their eccentricities.
Matt Holman   +3 more
openaire   +3 more sources

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.
Noel Gorelick   +2 more
openaire   +4 more sources

Climatic tale

open access: yesPedagogy and Psychology of Sport, 2020
Climatic tale. In this article, the author made an attempt to analyze the causes and consequences of climate warming on Earth. How real are the threats and what is the deadline for the response of mankind to them.
Аnatoliy Zhukov
doaj   +1 more source

A Planetary Lens: The Photo-Poetics of Western Women’s Writing. Audrey Goodman

open access: yesIperstoria, 2022
Review of A Planetary Lens by Audrey Goodman.
Serena Fusco
doaj   +1 more source

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

Who is (Not) Afraid of the Climate Apocalypse? On the Planetary Perspectives of Anthropocene Political Theology through New Images of the Earth

open access: yesEtnoantropološki Problemi, 2022
The paper comparatively explores the projects of Gaia and the planet as the new images of the Earth, proposed by Bruno Latour and Dipesh Chakrabarty respectively.
Stefan Janković
doaj   +1 more source

PLANETS ON THE EDGE [PDF]

open access: yesThe Astrophysical Journal, 2014
Hot Jupiters formed through circularization of high-eccentricity orbits should be found at orbital separations $a$ exceeding $twice$ that of their Roche limit $a_{\rm R}$. Nevertheless, about a dozen giant planets have now been found well within this limit ($a_{\rm R}
Francesca Valsecchi, Frederic A. Rasio
openaire   +3 more sources

Tides between the TRAPPIST-1 planets [PDF]

open access: yes, 2019
The TRAPPIST-1 system is sufficiently closely packed that tides raised by one planet on another are significant. We investigate whether this source of tidal heating is comparable to eccentricity tides raised by the star.
Hay, Hamish, Matsuyama, Isamu
core   +2 more sources

Emerging Sensor Platforms Allow for Seagrass Extent Mapping in a Turbid Estuary and from the Meadow to Ecosystem Scale

open access: yesRemote Sensing, 2021
Seagrass meadows are globally important habitats, protecting shorelines, providing nursery areas for fish, and sequestering carbon. However, both anthropogenic and natural environmental stressors have led to a worldwide reduction seagrass habitats.
Johannes R. Krause   +3 more
doaj   +1 more source

A Third Planet Orbiting HIP 14810 [PDF]

open access: yes, 2009
We present new precision radial velocities and a three-planet Keplerian orbit fit for the V = 8.5, G5 V star HIP 14810. We began observing this star at Keck Observatory as part of the N2K Planet Search Project. Wright et al.
A. W. Howard   +26 more
core   +2 more sources

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