Life out there?

Scientists wonder if planet is habitable

A rocky distant world may be the first capable of supporting life, a new study reveals.  

Also: 

• Space view of city growth
• Space beer developed
• Ocean satellite ready

Another take on this story:

Gliese 581d: An Exoplanet Fit for Humans?

The world -- located 20 light-years from Earth -- might sustain liquid water, but it would be a very alien place to visit.  

Read more