Astronomer spies conditions 'just right' for building an Earth

This artist's conception shows a binary-, or two-star, system, called HD 113766, where astronomers suspect a rocky Earth-like planet is forming around one of the stars. The system is located approximately 424 light-years away. At approximately 10 to 16 million years old, the star is also at just the right age for forming rocky planets. Credit: NASA/JPL-Caltech/JHUAPL