How to Characterize Habitable Worlds and Signs of Life
نویسندگان
چکیده
منابع مشابه
Habitable worlds with no signs of life.
'Most habitable worlds in the cosmos will have no remotely detectable signs of life' is proposed as a biological hypothesis to be tested in the study of exoplanets. Habitable planets could be discovered elsewhere in the Universe, yet there are many hypothetical scenarios whereby the search for life on them could yield negative results. Scenarios for habitable worlds with no remotely detectable ...
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Almost 500 extrasolar planets have been found since the discovery of 51 Peg b by Mayor and Queloz in 1995. The traditional field of planetology has thus expanded its frontiers to include planetary environments not represented in our Solar System. We expect that in the next five years space missions (Corot, Kepler and GAIA) or ground-based detection techniques will both increase exponentially th...
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Instead of diving into the Intergovernmental Panel on Climate Change Reports, astrobiologists interested in the physics behind global warming could start with Jim Kasting’s new book, How to Find a Habitable Planet. Kasting not only describes how to find another habitable planet but also clearly explains the long-term evolution of terrestrial planet atmospheres. This is the long-term context nee...
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Critical thinking and scientific reasoning are central to higher education in the United States, but many courses (in-person and online) teach students information about science much more than they teach the actual process of science and its associated knowledge and skills. In the online arena specifically, the tools available for course construction exacerbate this problem by making it difficu...
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Close-in giant planets (e.g., "hot Jupiters") are thought to form far from their host stars and migrate inward, through the terrestrial planet zone, via torques with a massive gaseous disk. Here we simulate terrestrial planet growth during and after giant planet migration. Several-Earth-mass planets also form interior to the migrating jovian planet, analogous to recently discovered "hot Earths....
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ژورنال
عنوان ژورنال: Annual Review of Astronomy and Astrophysics
سال: 2017
ISSN: 0066-4146,1545-4282
DOI: 10.1146/annurev-astro-082214-122238