Results 31 to 40 of about 35,629 (285)

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, A.K. Lal, A.K. Lal, A.P. Buccino, A.P. Buccino, B.W. Jones, B.W. Jones, C.A. Iglesias, D. Reimers, D. Tepfer, D.M. Williams, D.S. McKay, F. Hoyle, F. Hoyle, F. Hoyle, Fenghui Zhang, J.C. Tarter, J.F. Kasting, J.J. Eldridge, J.P. Guo, J.P. Guo, J.P. Guo, J.R. Hurley, J.T. Wickramasinghe, J.W. Ferguson, Jianpo Guo, K.-P. Schröder, M. Catelan, M. Noble, N. Grevesse, O.R. Pols, O.R. Pols, O.R. Pols, P.H. Warren, P.P. Eggleton, P.P. Eggleton, P.P. Eggleton, R. Joseph, S. Franck, S. Ida, W. Bloh von, X.F. Chen, Z.W. Han, Zhanwen Han   +43 more
core   +1 more source

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

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, P. C. Stancil, J. P. Terry, C. K. Ellison   +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, Juan F. Salazar, Pablo Cuartas-Restrepo, Germán Poveda   +3 more
openaire   +5 more sources

Water Planets in the Habitable Zone: Atmospheric Chemistry, Observable Features, and the case of Kepler-62e and -62f

, 2013
Planets composed of large quantities of water that reside in the habitable zone are expected to have distinct geophysics and geochemistry of their surfaces and atmospheres.
Kaltenegger, L., Rugheimer, S., Sasselov, D.   +2 more
core   +1 more source

TESS Habitable Zone Star Catalog [PDF]

The Astrophysical Journal Letters, 2019
Abstract We present the Transiting Exoplanet Survey Satellite (TESS) Habitable Zone Stars Catalog, a list of 1822 nearby stars with a TESS magnitude brighter than T = 12 and reliable distances from Gaia DR2, around which the NASA’s TESS mission can detect transiting planets, which receive Earth-like irradiation.
L. Kaltenegger, J. Pepper, K. Stassun, R. Oelkers   +3 more
openaire   +2 more sources

Photocatalytic Water Splitting on the Lunar Surface: Prospects for In Situ Resource Utilization

Advanced Materials Interfaces, EarlyView.
Water has been found in craters on the moon nearby locations which are illuminated >80% of the time. Photocatalysis uses energy from sunlight to drive chemical reactions such as water splitting to produce oxygen and hydrogen. It is a scalable technology that requires lighter equipment and utilizes resources available on the moon. ABSTRACT The discovery
Ranjani Kalyan, Thomas D. Small, Gregory F. Metha, Mahmoud Adel Hamza, Thomas J. O'Dea, Yideng Shen, Cameron J. Shearer   +6 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., Brasier M. D., Bruno Lopez, Clampin M., Dalton J. B., Jean Schneider, Kasting J. F., Kozlowski M., Maeder A., Mallik S. V., Neckel H., Paczynski B., Roten C.-A. H., Sleep N. H., Weidemann J., William C. Danchi, Zubrin R.   +16 more
core   +3 more sources

From Lab to Landscape: Environmental Biohybrid Robotics for Ecological Futures

Advanced Robotics Research, EarlyView.
This Perspective explores environmental biohybrid robotics, integrating living tissues, microorganisms, and insects for operation in real‐world ecosystems. It traces the leap from laboratory experiments to forests, wetlands, and urban environments and discusses key challenges, development pathways, and opportunities for ecological monitoring and ...
Miriam Filippi
wiley   +1 more source