The public is invited to hear Dr. Marc Rayman give a free presentation on the Dawn space mission at 5 p.m. May 25 at the new Goldstone Visitors Center at the Harvey House, 681 N. First Ave., Barstow.

Dawn is the only spacecraft ever to orbit a dwarf planet and the only spacecraft to orbit two extraterrestrial destinations.

Dr. Rayman will talk about its use of ion propulsion as well as its two exotic destinations, Vesta and Ceres, and also will share the excitement and profundity of controlling a spacecraft in deep space.