Our galaxy gets more crowded as NASA finds 715 new planets

Are we alone in the universe? NASA’s discovery of 715 new planets beyond the solar system suggests the answer is: No, we're not alone.  

The National Aeronautics and Space Administration (NASA) have announced that scientists have found more than 715 new planets to add to the list of known worlds beyond the solar system, boosting the overall tally to nearly 1,700,