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Global Climate & Habitability: October 2013


Carbon Worlds May be Waterless

Planets rich in carbon, including so-called diamond planets, may lack oceans, according to NASA-funded theoretical research.

Previous attempts to describe circumbinary habitable zones have been concerned with the spatial extent of the zone, calculated analytically according to the combined radiation field of both stars.

The mystery of why life on Earth evolved when it did has deepened with the publication of a new study in the latest edition of the journal Science. Scientists at the CRPG-CNRS University of Lorraine, The University of Manchester and the Institut de Physique du Globe de Paris have ruled out a theory as to why the planet was warm enough to sustain the planet's earliest life forms when the Sun's energy was roughly three-quarters the strength it is today.

On the exoplanet Kepler 7b, the weather is highly predictable, an international team of scientists has found: On any given day, the exoplanet, which orbits a star nearly 1,000 light-years from Earth, is heavily overcast on one side, while the other side likely enjoys clear, cloudless weather.