... Tonight's Sky . ... Observing . ... Star Atlas . ... Machines teach astronomers about stars . ... Astronomers have turned to a method called "machine learning" to help them understand the properties of large numbers of stars. ... Astronomers are enlisting the help of machines to sort through thousands of stars in our galaxy and learn their sizes, compositions, and other basic traits. ... Now astronomers are turning to machines to help them identify basic properties of stars based on sky survey...