Results 1 to 10 of about 473,596 (201)
An Informational–Entropic Approach to Exoplanet Characterization [PDF]
EntropyIn the past, measures of the “Earth-likeness” of exoplanets have been qualitative, considering an abiotic Earth, or requiring discretionary choices of what parameters make a planet Earth-like.
Sara Vannah +2 more
doaj +2 more sources
Prevalence of Earth-size planets orbiting Sun-like stars [PDF]
PNAS 2013 110 (48) 19175-19176, 2013 Determining whether Earth-like planets are common or rare looms as a touchstone in the question of life in the universe. We searched for Earth-size planets that cross in front of their host stars by examining the brightness measurements of 42,000 stars from National Aeronautics and Space Administration's Kepler mission.
Howard, Andrew W. +2 more
arxiv +7 more sources
CoRoT’s first seven planets: An overview*
EPJ Web of Conferences, 2011 The up to 150 day uninterrupted high-precision photometry of about 100000 stars – provided so far by the exoplanet channel of the CoRoT space telescope – gave a new perspective on the planet population of our galactic neighbourhood.
Barge P. +4 more
doaj +3 more sources
A scientometric prediction of the discovery of the first potentially habitable planet with a mass similar to Earth. [PDF]
PLoS ONE, 2010 BACKGROUND: The search for a habitable extrasolar planet has long interested scientists, but only recently have the tools become available to search for such planets.
Samuel Arbesman, Gregory Laughlin
doaj +6 more sources
Most 1.6 Earth-Radius Planets are not Rocky [PDF]
2015, ApJ, 801, 41, 2014 The Kepler Mission, combined with ground based radial velocity (RV) follow-up and dynamical analyses of transit timing variations, has revolutionized the observational constraints on sub-Neptune-size planet compositions. The results of an extensive Kepler follow-up program including multiple Doppler measurements for 22 planet-hosting stars more than ...
Rogers, Leslie A.
arxiv +6 more sources
EPJ Web of Conferences, 2011 It has been shown that an Earth-size planet or a super-Earth, in resonance with a transiting Jupiter-like body around an M star, can create detectable TTV signals (Kirste & Haghighipour, 2011).
Rastegar S., Haghighipour N.
doaj +3 more sources
Inferring the instability of a dynamical system from the skill of data assimilation exercises [PDF]
Nonlinear Processes in Geophysics, 2021 Data assimilation (DA) aims at optimally merging observational data and model outputs to create a coherent statistical and dynamical picture of the system under investigation.
Y. Chen +6 more
doaj +1 more source
Lévy noise versus Gaussian-noise-induced transitions in the Ghil–Sellers energy balance model [PDF]
Nonlinear Processes in Geophysics, 2022 We study the impact of applying stochastic forcing to the Ghil–Sellers energy balance climate model in the form of a fluctuating solar irradiance. Through numerical simulations, we explore the noise-induced transitions between the competing warm and ...
V. Lucarini +6 more
doaj +1 more source
The Brahmavarta Initiative: A Roadmap for the First Self-Sustaining City-State on Mars
Universe, 2022 The vast universe, from its unfathomable ends to our very own Milky Way galaxy, is comprised of numerous celestial bodies—disparate yet each having their uniqueness.
Arvind Mukundan, Hsiang-Chen Wang
doaj +1 more source
Geodesy in Japan: legends and highlights
Earth, Planets and Space, 2020 Here, I review modern history of geodesy and geodynamics in Japan, highlighting a few episodes during the last two centuries. The review starts with the first measurement of the meridional arc length in Japan by Tadataka Ino (1745–1818) early in the ...
Kosuke Heki
doaj +1 more source