Results 31 to 40 of about 3,044 (177)
VISIBLE AND INFRARED TELESCOPES IN DETECTION OF EARTH-LIKE EXOPLANETS
Radio Physics and Radio Astronomy, 2016 Object and purpose: The study examines the balance of resolving and light-harvesting (penetrating) abilities of filled and sparse aperture telescopes in direct detection of terrestrial exoplanets.
A. D. Yegorov +4 more
doaj +1 more source
Space Weather, 2022 The present study aims at characterizing the habitability conditions of exoplanets with an Earth‐like magnetosphere inside the habitable zone of M and F stars, caused by the direct deposition of the stellar wind on the exoplanet surface.
J. Varela +5 more
doaj +1 more source
The Great Cosmic Silence: What Does the Fermi Paradox Tell About the Future of Humanity?
Global Policy, EarlyView.ABSTRACT This article examines how institutional time horizons shape the long‐term survival prospects of human technological civilisation. While research on global catastrophic and existential risks has expanded, the temporal structures of political‐economic institutions remain underexamined.
Heikki Patomäki
wiley +1 more source
Planets and the Possibility of Life beyond Earth
ZygonThe question of whether life exists beyond Earth has intrigued humans throughout history. Millennia of speculation have fueled both philosophy and theology, with contemplations of the spiritual state of alien beings shedding new light on that state of ...
Jennifer J. Wiseman
doaj +2 more sources
Classifying Exoplanets with a Gaussian Mixture Model
The Open Journal of Astrophysics, 2018 Recently, Odrzywolek and Rafelski have found three distinct categories of exoplanets, when they are classified based on density. We first carry out a similar classification of exoplanets according to their density using the Gaussian Mixture Model ...
Soham Kulkarni, Shantanu Desai
doaj +1 more source
Universe, 2022 Only a low percentage of the radiation from our Sun is captured by photosynthesis, but this conversion of solar to chemical energy sustains all life on Earth.
Pablo Marcos-Arenal +7 more
doaj +1 more source
Computer Graphics Forum, EarlyView.We present design considerations for animated transitions of the appearance of 3D spatial datasets in a hybrid Augmented Reality‐desktop context. Such hybrid interfaces combine both traditional and immersive displays to facilitate the exploration of 2D and 3D data representations in the environment in which they are best displayed.
Yucheng Lu +6 more
wiley +1 more source
Challenges, 2014 Rational speculation about biological evolution on other worlds is one of the outstanding challenges in astrobiology. With the growing confirmation that multiplanetary systems abound in the universe, the prospect that life occurs redundantly throughout ...
Louis N. Irwin +3 more
doaj +1 more source
Doppler-Shifted Alkali D Absorption as Indirect Evidence for Exomoons
Frontiers in Astronomy and Space Sciences, 2022 Sodium and potassium signatures in transiting exoplanets can be challenging to isolate from the stellar absorption lines. Here, these challenges are discussed in the framework of Solar System observations, and transits of Mercury in particular. Radiation
Carl A. Schmidt
doaj +1 more source
Shaping of Planetary Nebulae by Exoplanets
Galaxies, 2020 (1) Background: We investigate the hypothesis that exoplanet engulfment can help explain the observed non-spherical planetary nebula population, as a complementary shaping mechanism to the binary hypothesis.
Nicola Keaveney +2 more
doaj +1 more source