NASA head urges new focus on search for habitable planet
نویسندگان
چکیده
منابع مشابه
Evolution of a Habitable Planet
■ Abstract Giant planets have now been discovered around other stars, and it is only a matter of time until Earth-sized planets are detected. Whether any of these planets are suitable for life depends on their volatile abundances, especially water, and on their climates. Only planets within the liquid-water habitable zone (HZ) can support life on their surfaces and, thus, can be analyzed remote...
متن کاملEmergence of a Habitable Planet
We address the first several hundred million years of Earth’s history. The Moonforming impact left Earth enveloped in a hot silicate atmosphere that cooled and condensed over ∼1,000 yrs. As it cooled the Earth degassed its volatiles into the atmosphere. It took another ∼2 Myrs for the magma ocean to freeze at the surface. The cooling rate was determined by atmospheric thermal blanketing. Tidal ...
متن کاملHow to Find a Habitable Planet
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...
متن کاملSearch for a habitable terrestrial planet transiting the nearby red dwarf GJ 1214⋆
High-precision eclipse spectrophotometry of transiting terrestrial exoplanets represents a promising path for the first atmospheric characterizations of habitable worlds and the search for life outside our solar system. The detection of terrestrial planets transiting nearby late-type M-dwarfs could make this approach applicable within the next decade, with soon-to-come general facilities. In th...
متن کاملA Habitable Planet around HD 85512 ?
Aims. In this study we assess the habitability of HD85512 b, a 3.6 MEarth planet orbiting a K5V star. The radial velocity data and orbital parameters for HD 85512 b have just been published, based on data from the dedicated HARPS-upgrade GTO program. Methods. This paper outlines a simple approach to evaluate habitability of rocky planets from radial velocity (RV) searches by using atmospheric m...
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ژورنال
عنوان ژورنال: Nature
سال: 1994
ISSN: 0028-0836,1476-4687
DOI: 10.1038/369349b0