Results 31 to 40 of about 4,316 (299)

The Detection and Characterization of Extrasolar Planets

Challenges, 2014
We have now confirmed the existence of > 1800 planets orbiting stars other thanthe Sun; known as extrasolar planets or exoplanets. The different methods for detectingsuch planets are sensitive to different regions of parameter space, and so, we are ...
Ken Rice
doaj   +1 more source

A Catalog of Habitable Zone Exoplanets

The Astronomical Journal, 2023
The search for habitable planets has revealed many planets that can vary greatly from an Earth analog environment. These include highly eccentric orbits, giant planets, different bulk densities, relatively active stars, and evolved stars.
Michelle L. Hill, Kimberly Bott, Paul A. Dalba, Tara Fetherolf, Stephen R. Kane, Ravi Kopparapu, Zhexing Li, Colby Ostberg   +7 more
doaj   +1 more source

Habitable Zone Lifetime of Exoplanets around Main Sequence Stars

, 2013
Funding: Dean's Scholarship at the University of East Anglia.The potential habitability of newly discovered exoplanets is initially assessed by determining whether their orbits fall within the circumstellar habitable zone of their star.
Claire, M., Rushby, Andrew, Watson, A., Osborn, H.   +3 more
core   +1 more source

The Water Activity of Mars-relevant Multicomponent Brines: The Changing Influence of Perchlorate on Habitability over Time

The Planetary Science Journal, 2023
Low water activity limits the habitability of aqueous environments, and salts present on Mars are known to reduce water activity. As environmental brines are not pure solutions of a single salt, predicting their water activity is difficult without direct
Adam H. Stevens, Charles S. Cockell
doaj   +1 more source

Validation of 12 small Kepler transiting planets in the habitable zone [PDF]

, 2015
We present an investigation of 12 candidate transiting planets from Kepler with orbital periods ranging from 34 to 207 days, selected from initial indications that they are small and potentially in the habitable zone (HZ) of their parent stars.
Fressin, Francois, Borucki, William J., Horch, Elliott P., Jenkins, Jon M., Howell, Steve B., Marcy, Geoffrey W., Everett, Mark E., Quintana, Elisa V., Kolbl, Rea, Ciardi, David R., Ballard, Sarah, Batalha, Natalie M., Isaacson, Howard T., Howard, Andrew W., Muirhead, Philip S., Barclay, Thomas, Bryson, Stephen T., Kipping, David M., Henze, Christopher E., Newton, Elisabeth R., Caldwell, Douglas A., Petigura, Erik A., Twicken, Joseph D., Crepp, Justin R., McCauliff, Sean, Torres, Guillermo   +25 more
core   +1 more source

Building of a Habitable Planet [PDF]

, 2007
Except the old Jack Hills zircon crystals, it does not exit direct record of the first 500 Ma of the Earth history. Consequently, the succession of events that took place during this period is only indirectly known through geochemistry, comparison with other telluric planets, and numerical modelling. Just after planetary accretion several episodes were
Martin, H., Albarède, Francis, Claeys, P., Gargaud, M., Marty, B., Morbidelli, A., Pinti, D. L.   +6 more
openaire   +3 more sources

Atmospheric reconnaissance of the habitable-zone Earth-sized planets orbiting TRAPPIST-1 [PDF]

, 2017
International audienceSeven temperate Earth-sized exoplanets readily amenable for atmospheric studies transit the nearby ultracool dwarf star TRAPPIST-1.
Leconte, Jeremy, Triaud, Amaury, Lederer, Susan M, Bolmont, E., Demory, Brice Olivier, Stamenković, V., Burgasser, Adam J, Owen, J. E., James E. Owen, Hannah R. Wakeford, Bolmont, Emeline, Bourrier, V., Emmanuël Jehin, Stamenković, Vlada, Owen, James E., Susan M. Lederer, Lederer, S. M., Nikole K. Lewis, Lederer, Susan, Selsis, Franck, de Wit, Julien, Burgasser, Adam, J., Julien de Wit, Simon Grimm, Delrez, Laetitia, Demory, B.-O., Wakeford, Hannah R., Wakeford, Hannah, Wakeford, Hannah R, Selsis, F., Owen, James E, Owen, James, Vlada Stamenković, Selsis, Frank, Michaël Gillon, Lewis, Nikole K, Frank Selsis, Burgasser, Adam,, Amaury H. M. J. Triaud, BURGASSER, Adam, Brice-Olivier Demory, Lewis, N. K., Adam J. Burgasser, Triaud, Amaury H.M.J.; id_orcid, Grimm, S., Wakeford, H. R., De Wit, J., Burgasser, Adam J., Burgasser, A. J., Lederer, Susan M., Emeline Bolmont, Vincent Bourrier, Wit, Julien de, Jérémy Leconte, Lewis, Nikole, Bourrier, Vincent, Triaud, A. H. M. J., Gillon, Michael, Leconte, J., Jehin, Emmanuel, Grimm, Simon, Triaud, Amaury H. M. J., Demory, Brice-Olivier, Lewis, Nikole K., Laetitia Delrez, Triaud, Amaury HMJ   +65 more
core   +1 more source

Habitable Zones in Binary Star Systems: A Zoology

Galaxies, 2020
Several concepts have been brought forward to determine where terrestrial planets are likely to remain habitable in multi-stellar environments. Isophote-based habitable zones, for instance, rely on insolation geometry to predict habitability, whereas ...
Siegfried Eggl, Nikolaos Georgakarakos, Elke Pilat-Lohinger   +2 more
doaj   +1 more source

Biosignatures Search in Habitable Planets

Galaxies, 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   +1 more source

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