2018 U.S. news in pictures from A to Z

L FOR LANDER

Photo provided by NASA on Nov. 26, 2018 shows the first image taken by NASA's InSight lander on the surface of Mars after its landing. NASA's InSight spacecraft touched down safely on Mars on Monday, kicking off a two-year mission to explore the deep interior of the Red Planet. (Xinhua/NASA/JPL-CALTECH)