@CNN: Astronomers have found a frozen exoplanet more than three times the mass of Earth, orbiting a star that’s only six light-years away — the second-closest known exoplanet https://t.co/lKaDNgjzr8 https://t.co/dtEYNOqODZ

@CNN: Astronomers have found a frozen exoplanet more than three times the mass of Earth, orbiting a star that’s only six light-years away — the second-closest known exoplanet https://t.co/lKaDNgjzr8 https://t.co/dtEYNOqODZ