Habitable Zones & Global Climate: December 2017

A breakthrough in the understanding of how cosmic rays from supernovae can influence Earth's cloud cover and thereby climate has been published in the journal Nature Communications.

Water content and the internal evolution of terrestrial planets and icy bodies are closely linked. The distribution of water in planetary systems is controlled by the temperature structure in the protoplanetary disk and dynamics and migration of planetesimals and planetary embryos.

It is theoretically possible that habitable planets exist around pulsars. Such planets must have an enormous atmosphere that convert the deadly X-rays and high-energy particles of the pulsar into heat.

How long might a rocky, Mars-like planet be habitable if it were orbiting a red dwarf star? It's a complex question but one that NASA's Mars Atmosphere and Volatile Evolution mission can help answer.

Models of thermal evolution, crustal production, and CO2 cycling are used to constrain the prospects for habitability of rocky planets, with Earth-like size and composition, in the stagnant lid regime.

A team of scientists using a state-of-the-art UCLA instrument reports the discovery of a planetary-scale "tug-of-war" of life, deep Earth and the upper atmosphere that is expressed in atmospheric nitrogen.