AMHERST, Mass. - In a field in the southwest corner of the UMass campus, near McGuirk Alumni Stadium, is a wide circle of upright stones, each of them standing two to three feet tall. The structure is a sunwheel, explains University astronomer Judith Young. Like Stonehenge, the stones of a sunwheel align perfectly with the rising and setting sun at the times of solstices and equinoxes. Young recently secured start-up funding for the sunwheel, including $6,000 from the National Aeronautics and Space Administration and $2,500 from the University’s Healey Endowment (named for former trustee Joseph Healey), in addition to $2,500 raised privately. She sees the sunwheel as a unique connection between earth and sky, past and present, and science and art.