Results 21 to 30 of about 226,391 (309)

THE OCCURRENCE OF POTENTIALLY HABITABLE PLANETS ORBITING M DWARFS ESTIMATED FROM THE FULL KEPLER DATASET AND AN EMPIRICAL MEASUREMENT OF THE DETECTION SENSITIVITY [PDF]

, 2015
We present an improved estimate of the occurrence rate of small planets orbiting small stars by searching the full four-year Kepler data set for transiting planets using our own planet detection pipeline and conducting transit injection and recovery ...
C. Dressing, D. Charbonneau
semanticscholar   +1 more source

Decolonisation and anti‐racism: Challenges and opportunities for (teacher) education

The Curriculum Journal, Volume 34, Issue 1, Page 8-21, March 2023., 2023
Abstract In the past two decades, we have seen a renewed interest in decolonisation. A proliferation of literature produced on the topic, the establishment of journals on decolonisation, student protests such as the #RhodesMustFall campaign at universities in South Africa and Oxford University in Britain, French President Emmanuel Macron's call for the
Lesley Le Grange
wiley   +1 more source

Functional diversity of farmland bees across rural–urban landscapes in a tropical megacity

Ecological Applications, Volume 32, Issue 8, December 2022., 2022
Abstract Urbanization poses a major threat to biodiversity and food security, as expanding cities, especially in the Global South, increasingly compete with natural and agricultural lands. However, the impact of urban expansion on agricultural biodiversity in tropical regions is overlooked.
Gabriel Marcacci, Ingo Grass, Vikas S. Rao, Shabarish Kumar S, K. B. Tharini, Vasuki V. Belavadi, Nils Nölke, Teja Tscharntke, Catrin Westphal   +8 more
wiley   +1 more source

“Going out to get in”—Roles of forest conflicts in bottom‐linked environmental governance progressing toward socio‐political innovations

Environmental Policy and Governance, Volume 32, Issue 6, Page 478-491, December 2022., 2022
Abstract Social innovation literature focuses commonly on roles of cooperation in addressing co‐evolution of civil society initiatives and state‐based governance toward sustainable solutions. However, roles of conflicts in driving social change are scarcely addressed in social innovation literature.
Simo Sarkki, Mikko Jokinen, Hannu I. Heikkinen, Maria Nijnik, Mariana Melnykovych, Tatiana Kluvánková   +5 more
wiley   +1 more source

What makes a planet habitable? [PDF]

The Astronomy and Astrophysics Review, 2009
This work reviews factors which are important for the evolution of habitable Earth-like planets such as the effects of the host star dependent radiation and particle fluxes on the evolution of atmospheres and initial water inventories. We discuss the geodynamical and geophysical environments which are necessary for planets where plate tectonics remain ...
Lammer, H., J.-H., Bredehoft, Coustenis, A., M.L., Khodachendo, Kaltenegger, L., Grasset, O., Prieur, D., Raulin, F., Ehrenfreud, P., Yamauchi, M., J.-E., Wahlund, J.M., Griesmaier, Stangl, G., C.S., Cockell, Kulikov, Y., J.-L., Grenfell, Rauer, H.   +16 more
openaire   +4 more sources

Detectability of atmospheric features of Earth-like planets in the habitable zone around M dwarfs [PDF]

Astronomy & Astrophysics, 2019
Context. The characterisation of the atmosphere of exoplanets is one of the main goals of exoplanet science in the coming decades. Aims. We investigate the detectability of atmospheric spectral features of Earth-like planets in the habitable zone (HZ ...
F. Wunderlich, M. Godolt, J. Grenfell, S. Städt, Alexis M. S. Smith, S. Gebauer, F. Schreier, P. Hedelt, H. Rauer   +8 more
semanticscholar   +1 more source

Topographic thresholds for gully head formation in badlands

Earth Surface Processes and Landforms, Volume 47, Issue 15, Page 3558-3587, December 2022., 2022
Gully topographic threshold model was extended to badlands, on the basis of data collected in the Mediterranean environment in Italy and Spain, characterized by diversified climatic, lithological, geological and anthropogenic settings. Criteria for the attribution of curve number values has been more objectively defined in order to reduce arbitrariness
Mauro Rossi, Dino Torri, Sofie De Geeter, Cati Cremer, Jean Poesen   +4 more
wiley   +1 more source

Risks for Life on Habitable Planets from Superflares of Their Host Stars [PDF]

, 2017
We explore some of the ramifications arising from superflares on the evolutionary history of Earth, other planets in the solar system, and exoplanets. We propose that the most powerful superflares can serve as plausible drivers of extinction events, and ...
M. Lingam, A. Loeb
semanticscholar   +1 more source

Impact of Clouds and Hazes on the Simulated JWST Transmission Spectra of Habitable Zone Planets in the TRAPPIST-1 System [PDF]

Astrophysical Journal, 2019
The TRAPPIST-1 system, consisting of an ultracool host star having seven known Earth-sized planets, will be a prime target for atmospheric characterization with the James Webb Space Telescope (JWST).
T. Fauchez, M. Turbet, G. Villanueva, E. Wolf, G. Arney, R. Kopparapu, A. Lincowski, A. Mandell, J. Wit, D. Pidhorodetska, S. Domagal‐Goldman, K. Stevenson   +11 more
semanticscholar   +1 more source

Emergence of a Habitable Planet

Space Science Reviews, 2007
We address the first several hundred million years of Earth’s history. The Moon-forming impact left Earth enveloped in a hot silicate atmosphere that cooled and condensed over ∼1,000 yrs. As it cooled the Earth degassed its volatiles into the atmosphere. It took another ∼2 Myrs for the magma ocean to freeze at the surface.
Zahnle, Kevin, Arndt, Nick, Cockell, Charles, Halliday, Alex, Nisbet, Euan, Selsis, Franck, Sleep, Norman H.   +6 more
openaire   +10 more sources