Results 51 to 60 of about 1,315 (165)

CHES: An astrometry mission searching for nearby habitable planets. [PDF]

Innovation (Camb), 2022
Ji J, Wang S, Li H, Fang L, Li D.
europepmc   +1 more source

Closeby Habitable Exoplanet Survey (CHES). I. Astrometric Noise and Planetary Detection Efficiency Due to Stellar Spots and Faculae

The Astronomical Journal
The Closeby Habitable Exoplanet Survey (CHES) is dedicated to the astrometric exploration for habitable-zone Earth-like planets orbiting solar-type stars in close proximity, achieving unprecedented microarcsecond precision.
Chunhui Bao, Jianghui Ji, Dongjie Tan, Guo Chen, Xiumin Huang, Su Wang, Yao Dong   +6 more
doaj   +1 more source

The past and future habitability of planet Mars [PDF]

Current Biology, 2014
SummaryResults from NASA’s Curiosity rover reveal traces of bygone aqueous environments with sufficiently benign conditions for some of Earth’s hardier extremophiles to thrive. If Mars hosted life in the past, it may do so again in the future, as a project to colonise our neighbour planet is now recruiting volunteers for the one-way trip. Michael Gross
openaire   +2 more sources

Climate Regimes across the Habitable Zone: A Comparison of Synchronous Rocky M and K Dwarf Planets

The Astrophysical Journal
M and K dwarf stars make up 86% of the stellar population and host many promising astronomical targets for detecting habitable climates in the near future.
Ana H. Lobo, Aomawa L. Shields
doaj   +1 more source

Carbon Cycle Imbalances on Arid Terrestrial Planets with Implications for Venus

The Planetary Science Journal
Arid terrestrial exoplanets are potentially abundant and are thus interesting targets in the search for life. In particular, M-dwarf planets such as those in the TRAPPIST-1 system may possess limited surface water, whereas early solar system terrestrials
Haskelle T. White-Gianella, Joshua Krissansen-Totton   +1 more
doaj   +1 more source

Nonlinear and Nonmonotonic Effect of Ocean Tidal Mixing on Exoplanet Climates and Habitability

The Astrophysical Journal Letters
Tides play an important role in the circulation and mean state of the Earth’s oceans through inducing significant mixing. On other planets, tidal forcings could be highly amplified compared to Earth, such as planets orbiting relatively close to low-mass ...
Maria Di Paolo, David P. Stevens, Manoj Joshi, Rob A. Hall   +3 more
doaj   +1 more source

Bioverse: Assessing the Ability of Direct Imaging Surveys to Empirically Constrain the Habitable Zone via Trends in Albedo

The Astronomical Journal
Will future direct imaging missions such as NASA’s upcoming Habitable Worlds Observatory (HWO) be able to understand Earth-sized planets as a population?
Noah W. Tuchow, Christopher C. Stark, Dániel Apai, Martin Schlecker, Kevin K. Hardegree-Ullman   +4 more
doaj   +1 more source

What if we Find Nothing? Bayesian Analysis of the Statistical Information of Null Results in Future Exoplanet Habitability and Biosignature Surveys

The Astronomical Journal
Future telescopes will survey temperate, terrestrial exoplanets to estimate the frequency of habitable ( η _Hab ) or inhabited ( η _Life ) planets.
Daniel Angerhausen, Amedeo Balbi, Andjelka B. Kovačević, Emily O. Garvin, Sascha P. Quanz   +4 more
doaj   +1 more source

Closeby Habitable Exoplanet Survey (CHES). IV. Synergy between Astrometry and Direct Imaging Missions of the Habitable World Observatory for Detecting Earth-like Planets

The Astronomical Journal
The detection and characterization of habitable planets around nearby stars persist as some of the foremost objectives in contemporary astrophysics.
Chunhui Bao, Jianghui Ji, Dongjie Tan, Guo Chen, Xiumin Huang, Su Wang, Yao Dong   +6 more
doaj   +1 more source

Requirements for Joint Orbital Characterization of Cold Giants and Habitable Worlds with Habitable Worlds Observatory

The Astronomical Journal
We determine optimal requirements for the joint detection of habitable-zone planets and cold giant planets with the Habitable Worlds Observatory (HWO). Analysis of 164 nearby stars shows that a coronagraph outer working angle of 1440 milliarcseconds (mas)
Sabina Sagynbayeva, Asif Abbas, Stephen R. Kane, Eric L. Nielsen, William Thompson, Sarah Blunt, Malena Rice, Jessie L. Christiansen, Caleb K. Harada, Elisabeth R. Newton, Yasuhiro Hasegawa, Philip J. Armitage, Tansu Daylan   +12 more
doaj   +1 more source