Results 31 to 40 of about 36,413 (332)
Extrasolar Trojan planets close to habitable zones [PDF]
Astronomy & Astrophysics, 2004 4 pages, 4 figures, submitted to A& ...
Dvorak, Rudolf +3 more
openaire +2 more sources
Radiative habitable zones in martian polar environments [PDF]
Icarus, 2005 The biologically damaging solar ultraviolet (UV) radiation (quantified by the DNA-weighted dose) reaches the Martian surface in extremely high levels. Searching for potentially habitable UV-protected environments on Mars, we considered the polar ice caps that consist of a seasonally varying CO2 ice cover and a permanent H2O ice layer. It was found that,
Córdoba-Jabonero, Carmen +4 more
openaire +4 more sources
On the timescale forcing in astrobiology [PDF]
Serbian 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
Habitable Zones of Host Stars During the Post-MS Phase
, 2010 A star will become brighter and brighter with stellar evolution, and the distance of its habitable zone will become farther and farther. Some planets outside the habitable zone of a host star during the main sequence phase may enter the habitable zone of
A.J. Watson +43 more
core +1 more source
Survival of habitable planets in unstable planetary systems
, 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 +1 more source
A Volcanic Hydrogen Habitable Zone [PDF]
The Astrophysical Journal Letters, 2017 Abstract The classical habitable zone (HZ) is the circular region around a star in which liquid water could exist on the surface of a rocky planet. The outer edge of the traditional N2–CO2–H2O HZ extends out to nearly ∼1.7 au in our solar system, beyond which condensation and scattering by CO2 outstrips its greenhouse capacity.
Ramirez, Ramses, Kaltenegger, Lisa
openaire +2 more sources
A New Definition of Exoplanet Habitability: Introducing the Photosynthetic Habitable Zone
The Astrophysical Journal Letters, 2023 It may be possible to detect biosignatures of photosynthesis in an exoplanet’s atmosphere. However, such a detection would likely require a dedicated study, occupying a large amount of telescope time. It is therefore prudent, while searching for signs of
C. Hall +3 more
doaj +1 more source
The Habitable Zone of Inhabited Planets [PDF]
, 2014 Abstract. In this paper we discuss and illustrate the hypothesis that life substantially alters the state of a planetary environment and therefore, modifies the limits of the HZ as estimated for an uninhabited planet. This hypothesis lead to the introduction of the Habitable Zone for Inhabited Planets (hereafter InHZ), defined here as the region where ...
Jorge I. Zuluaga +3 more
openaire +5 more sources
Advanced Functional Materials, EarlyView.This study shows that lizard osteoderm capping tissue is a hyper‐mineralized hydroxyapatite layer consistently covering the superficial osteoderm surface in those species studied here, yet it varies greatly in morphology, nanostructure, and mechanical performance across species.
Adrian Rodriguez‐Palomo +10 more
wiley +1 more source
Can Life develop in the expanded habitable zones around Red Giant Stars?
, 2005 We present some new ideas about the possibility of life developing around sub-giant and red giant stars. Our study concerns the temporal evolution of the habitable zone.
Brack A. +16 more
core +3 more sources