Astronomy Professor William Herbst studies the star, KH 15D. Pictured are images of KH 15D out of eclipse (left) and in eclipse (right) as taken from Wesleyan's observatory. Posted 03/31/05 It's 3 million years old and 2,400 light years away, but a distant star discovered by Wesleyan researchers has given insight into how our solar system may have formed. NASA wants to know more, and has given William Herbst almost a quarter of a million dollars to keep looking. This month NASA (the National Aeronautics and Space Administration) awarded Wesleyan Professor of Astronomy William Herbst a $216,000…