Results 11 to 20 of about 18,194 (283)

Survival of habitable planets in unstable planetary systems

open access: yesMonthly Notices of the Royal Astronomical Society, 2016
Many observed giant planets lie on eccentric orbits. Such orbits could be the result of strong scatterings with other giant planets. The same dynamical instability that produces these scatterings may also cause habitable planets in interior orbits to ...
Carrera, Daniel   +2 more
core   +3 more sources

How common are habitable planets? [PDF]

open access: yesNature, 1999
The Earth is teeming with life, which occupies a diverse array of environments; other bodies in our Solar System offer fewer, if any, niches that are habitable by life as we know it. Nonetheless, astronomical studies suggest that many habitable planets may be present within our Galaxy.
Jack J Lissauer
openaire   +4 more sources

Biosignatures Search in Habitable Planets [PDF]

open access: yesGalaxies, 2019
The search for life has had a new enthusiastic restart in the last two decades thanks to the large number of new worlds discovered. The about 4100 exoplanets found so far, show a large diversity of planets, from hot giants to rocky planets orbiting small
Riccardo Claudi, Eleonora Alei
doaj   +3 more sources

What makes a planet habitable?

open access: yesThe Astronomy and Astrophysics Review, 2009
This work reviews factors which are important for the evolution of habitable Earth-like planets such as the effects of the host star dependent radiation and particle fluxes on the evolution of atmospheres and initial water inventories. We discuss the geodynamical and geophysical environments which are necessary for planets where plate tectonics remain ...
Lammer, H.   +16 more
openaire   +5 more sources

Belatedly Habitable Planets

open access: yesResearch Notes of the AAS, 2021
Abstract Stars do not remain static, so their habitable zones evolve in time. Over a star's evolution, its habitable zone encompasses new planets, and it remains uncertain whether these planets can become habitable. We refer to this often overlooked class of planets as lying in the belatedly habitable zone, and stress that many planets ...
Noah W. Tuchow, Jason T. Wright
openaire   +1 more source

Surrounded by Giants: Habitable Zone Stability Within the HD 141399 System

open access: yesThe Astronomical Journal, 2023
The search for exoplanets has revealed a diversity of planetary system architectures, the vast majority of which diverge significantly from the template of the solar system.
Stephen R. Kane
doaj   +1 more source

KRITERIA PLANET LAYAK HUNI SEBAGAI ANALISIS KEBERADAAN DOPPELGANGER BUMI

open access: yesGravity: Jurnal Ilmiah Penelitian dan Pembelajaran Fisika, 2019
The discovery of extrasolar planets has reached rapid development. Until now, various earth-sized planets called terrestrial planets around their parent stars have been discovered .
Berthianna Nurcresia   +4 more
doaj   +1 more source

On the timescale forcing in astrobiology [PDF]

open access: yesSerbian Astronomical Journal, 2007
We investigate the effects of correlated global regulation mechanisms, especially Galactic gamma-ray bursts (GRBs), on the temporal distribution of hypothetical inhabited planets, using simple Monte Carlo numerical experiments.
Vukotić B., Ćirković M.M.
doaj   +1 more source

A scientometric prediction of the discovery of the first potentially habitable planet with a mass similar to Earth. [PDF]

open access: yesPLoS ONE, 2010
BACKGROUND: The search for a habitable extrasolar planet has long interested scientists, but only recently have the tools become available to search for such planets.
Samuel Arbesman, Gregory Laughlin
doaj   +1 more source

Prospects for Cryovolcanic Activity on Cold Ocean Planets

open access: yesThe Astrophysical Journal, 2023
We have estimated total internal heating rates and depths to possible subsurface oceans for 17 planets that may be cold ocean planets, low-mass exoplanets with equilibrium surface temperatures and/or densities that are consistent with icy surfaces and a ...
Lynnae C. Quick   +4 more
doaj   +1 more source

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