Chemistry Might Influence Habitable Zones Around Extrasolar Systems

kepler-field-of-view

Trace elements in extrasolar systems might influence the evolution of habitable zones around their stars, where carbon-based life as we know it might dwell. Most stars are made up of hydrogen and helium gas, but there still remain traces of heavier elements, like metals, that are inherited from the remnants of older stars or forged by stellar fusion.

Read more @ SciTechDaily