The Center for Matter at Atomic Pressures (CMAP), an NSF Physics Frontiers Center, is offering a one-week, residential, summer workshop program for undergraduates currently enrolled at U.S. universities and colleges. This in-person program, the Discovery Science Center Summer School for Matter at Extreme Conditions in the Laboratory and the Cosmos, will be held from June 26 – 30, 2023, (move-in: June 25; move-out: July 1) at the University of Rochester in Rochester, New York. There is no fee to apply or attend.