Results 71 to 80 of about 885,801 (233)
The Astrobiology of Alien Worlds: Known and Unknown Forms of Life
Universe, 2020 Most definitions of life assume that, at a minimum, life is a physical form of matter distinct from its environment at a lower state of entropy than its surroundings, using energy from the environment for internal maintenance and activity, and capable of
Louis N. Irwin, Dirk Schulze-Makuch
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Star-planet interactions [PDF]
, 2014 Stars interact with their planets through gravitation, radiation, and magnetic fields. I shall focus on the interactions between late-type stars with an outer convection zone and close-in planets, i.e., with an orbital semimajor axis smaller than ...
Lanza, A. F.
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Empirical Study of Simulated Two-planet Microlensing Event [PDF]
, 2014 We undertake the first study of two-planet microlensing models recovered from simulations of microlensing events generated by realistic multi-planet systems in which 292 planetary events including 16 two-planet events were detected from 6690 simulated ...
Mao, Shude +5 more
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The Intra-Mercurial Planet Or Planets [PDF]
Nature, 1876 THE question of the existence of one or more planetary bodies revolving within the orbit of Mercury is again revived by Weber's observation of a round black spot just within the sun's eastern limb, on the afternoon of April 4 in the present year which had not been visible on the same morning, and early on the following day had disappeared. The position
openaire +2 more sources
Limits on orbit crossing planetesimals in the resonant multiple planet system, KOI-730
, 2012 A fraction of multiple planet candidate systems discovered from transits by the Kepler mission contain pairs of planet candidates that are in orbital resonance or are spaced slightly too far apart to be in resonance.
Hasan, Imran +2 more
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The NASA-UC Eta-Earth Program: II. A Planet Orbiting HD 156668 with a Minimum Mass of Four Earth Masses [PDF]
, 2010 We report the discovery of HD 156668b, an extrasolar planet with a minimum mass of M_P sin i = 4.15 M_Earth. This planet was discovered through Keplerian modeling of precise radial velocities from Keck-HIRES and is the second super-Earth to emerge from ...
Adams +38 more
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The orbital motion, absolute mass, and high-altitude winds of exoplanet HD209458b
, 2010 For extrasolar planets discovered using the radial velocity method, the spectral characterization of the host star leads to a mass-estimate of the star and subsequently of the orbiting planet. In contrast, if also the orbital velocity of the planet would
Albrecht, Simon +3 more
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Remote SensingSuper-Resolution Land Surface Temperature (LSTSR) maps are essential for urban heat island (UHI) analysis and temperature monitoring. While much of the literature focuses on improving the resolution of low-resolution LST (e.g., MODIS-derived LST) using ...
Mahdiyeh Fathi +3 more
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The PLANET Collaboration [PDF]
Symposium - International Astronomical Union, 1996 A newly-formed microlensing monitoring network, the PLANET collaboration, is briefly described.
Michael D. Albrow +11 more
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