Rocky planets may be habitable depending on their 'air conditioning system'

The quest for potentially habitable planets is often interpreted as the search for an Earth twin. And yet, some rocky planets outside our Solar System may in fact be more promising candidates for further research. Scientists from KU Leuven, Belgium, have run 165 climate simulations for exoplanets that permanently face their 'sun' with the same side. They discovered that two of the three possible climates are potentially habitable.