Results 21 to 30 of about 35,917 (194)
Proceedings of the National Academy of Sciences, 2013 Significance Planets around other stars, or exoplanets, are now known to be common in our galaxy. Exoplanets span a much wider range of physical conditions than the planets in our solar system, and include extremely puffy gas giants to compact rocky planets that can have densities as high as that of iron. The diversity of exoplanets allows us
Spiegel, David S +2 more
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Frontiers in Astronomy and Space Sciences, 2021 Starting in 2008, NASA has provided the exoplanet community an observational program aimed at obtaining the highest resolution imaging available as part of its mission to validate and characterize exoplanets, as well as their stellar environments, in ...
Steve B. Howell +7 more
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Exploring and Validating Exoplanet Atmospheric Retrievals with Solar System Analog Observations
The Planetary Science Journal, 2023 Solar system observations that serve as analogs for exoplanet remote sensing data can provide important opportunities to validate ideas and models related to exoplanet environments.
Tyler D. Robinson, Arnaud Salvador
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Exoplanet Transit Parallax [PDF]
, 2007 The timing and duration of exoplanet transits has a dependency on observer position due to parallax. In the case of an Earth-bound observer with a 2 AU baseline the dependency is typically small and slightly beyond the limits of current timing precision ...
Bienayme O., Caleb A. Scharf, Dravins D.
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Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2012 Exoplanets—planets orbiting around stars other than our own Sun—appear to be common. Significant research effort is now focused on the observation and characterization of exoplanet atmospheres. Species such as water vapour, methane, carbon monoxide and carbon dioxide have been observed in a handful of hot, giant, gaseous planets, but ...
Giovanna, Tinetti +3 more
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Nature, 2018 The study of life on and off Earth needs unified funding and a coherent plan, say Caleb Scharf, Debra Fischer and Victoria Meadows. The study of life on and off Earth needs unified funding and a coherent plan, say Caleb Scharf, Debra Fischer and Victoria Meadows.
Caleb, Scharf +2 more
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Exoplanet Biosignatures: Future Directions [PDF]
Astrobiology, 2018 125 pages (double spaced), 12 figures; The paper is the fourth in a series of 5 review manuscripts of the NExSS Exoplanet Biosignatures Workshop.
Walker, Sara I. +13 more
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The Coming Emptiness: On the Meaning of the Emptiness of the Universe in Natural Philosophy
Philosophies, 2018 The cosmological relevance of emptiness—that is, space without bodies—is not yet sufficiently appreciated in natural philosophy. This paper addresses two aspects of cosmic emptiness from the perspective of natural philosophy: the distances to
Gregor Schiemann
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ExoGemS Detection of a Metal Hydride in an Exoplanet Atmosphere at High Spectral Resolution
The Astrophysical Journal Letters, 2023 Exoplanet atmosphere studies are often enriched by synergies with brown dwarf analogs. However, many key molecules commonly seen in brown dwarfs have yet to be confirmed in exoplanet atmospheres.
Laura Flagg +9 more
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Experimental Astronomy, 2012 A dedicated mission to investigate exoplanetary atmospheres represents a major milestone in our quest to understand our place in the universe by placing our Solar System in context and by addressing the suitability of planets for the presence of life.
G. Tinetti +134 more
openaire +11 more sources