Results 1 to 10 of about 226,391 (309)
Setting the stage for habitable planets. [PDF]
Our understanding of the processes that are relevant to the formation and maintenance of habitable planetary systems is advancing at a rapid pace, both from observation and theory.
Gonzalez G.
europepmc +9 more sources
Albedos, Equilibrium Temperatures, and Surface Temperatures of Habitable Planets. [PDF]
The potential habitability of known exoplanets is often categorized by a nominal equilibrium temperature assuming a Bond albedo of either ∼0.3, similar to Earth, or 0.
Del Genio AD+10 more
europepmc +3 more sources
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.
Noah W. Tuchow, J. Wright
semanticscholar +3 more sources
Multiverse Predictions for Habitability: Number of Potentially Habitable Planets [PDF]
How good is our universe at making habitable planets? The answer to this depends on which factors are important for life: Does a planet need to be Earth mass? Does it need to be inside the temperate zone? are systems with hot Jupiters habitable? Here, we
M. Sandora
semanticscholar +7 more sources
Potential long-term habitable conditions on planets with primordial H–He atmospheres [PDF]
Cold super-Earths that retain their primordial, H–He-dominated atmosphere could have surfaces that are warm enough to host liquid water. This would be due to the collision-induced absorption of infrared light by hydrogen, which increases with pressure ...
M. Mol Lous, R. Helled, C. Mordasini
semanticscholar +1 more source
Imaging low-mass planets within the habitable zone of α Centauri [PDF]
Giant exoplanets on wide orbits have been directly imaged around young stars. If the thermal background in the mid-infrared can be mitigated, then exoplanets with lower masses can also be imaged.
K. Wagner+41 more
semanticscholar +1 more source
Efficiency of the oxygenic photosynthesis on Earth-like planets in the habitable zone [PDF]
Oxygenic photosynthesis is the most important biochemical process in Earth biosphere and likely very common on other habitable terrestrial planets, given the general availability of its input chemical ingredients and of light as source of energy. It is
G. Covone+3 more
semanticscholar +1 more source
Martian moons exploration, MMX, is the new sample return mission planned by the Japan Aerospace Exploration Agency (JAXA) targeting the two Martian moons with the scheduled launch in 2024 and return to the Earth in 2029.
K. Kuramoto+33 more
semanticscholar +1 more source
The Occurrence of Rocky Habitable-zone Planets around Solar-like Stars from Kepler Data [PDF]
We present the occurrence rates for rocky planets in the habitable zones (HZs) of main-sequence dwarf stars based on the Kepler DR25 planet candidate catalog and Gaia-based stellar properties.
S. Bryson+81 more
semanticscholar +1 more source
Photosynthesis on habitable planets around low-mass stars [PDF]
We show that planets around M-dwarfs with $M_\star \lesssim 0.2 M_\odot$ may not receive enough photons in the photosynthetically active range of $400$-$750$ nm to sustain Earth-like biospheres.
M. Lingam, A. Loeb
semanticscholar +1 more source