This artist's rendering made available by NASA on Thursday shows a comparison between the Earth (left) and the planet Kepler-452b.
This artist's rendering made available by NASA on Thursday shows a comparison between the Earth (left) and the planet Kepler-452b. T. Pyle AP
This artist's rendering made available by NASA on Thursday shows a comparison between the Earth (left) and the planet Kepler-452b. T. Pyle AP

Scientists find closest thing yet to Earth-sun twin system

July 23, 2015 12:57 PM