As Mars exploration rovers head for landings on the red planet in January, the Oregon Museum of Science and Industry will sponsor a special party to observe the landing of the first American craft, the Spirit. The party will be in the OMSI Auditorium Saturday, Jan. 3, 2004, from 8 p.m. to midnight. Viewers will be able to see a live link from NASA’s Jet Propulsion Laboratory in Pasadena, California.