RT @AstronomyNow: An Earth-sized planet found in the habitable zone of the nearest star to our Sun:
astronomynow.com/2016/08/24/pot… https://t.co/ZsmUYB77AN
RT @AstronomyNow: An Earth-sized planet found in the habitable zone of the nearest star to our Sun:
astronomynow.com/2016/08/24/pot… https://t.co/ZsmUYB77AN