The Desert Sun

Solar Impulse, the Swiss-made, solar-powered airplane, completed the fourth leg of its transcontinental flight at 12:15 a.m. Sunday when it touched down at Dulles Airport, outside Washington, D.C.

The plane’s journey across the U.S.  began May 3 in San Francisco, with stops in Phoenix, Dallas, St. Louis, and a last-minute pit stop Friday in Cincinnati. After a two-week stay in D.C., it is scheduled to fly the last leg of the trip to New York City.