NASA's Kepler spacecraft has discovered Kepler-10b, its first confirmed rocky planet discovered to date. Kepler-10b is 1.4 times the size of Earth and orbits its star in only 0.84 days. Its not habitable zone, liquid water cannot exist.
For more information about the Kepler mission - www.nasa.gov/kepler
Here is an interesting video with some amazing mathematics in space. Enjoy!