reporting in hollywood, i'm suzanne marquez, cbs news. >>> lift off. lift off of ... on their way to the international space station. >> capsule blasted off from cbsphilly.com i can stand caring three astronaut from the us, britain, and rush a the men will spend six months on board the international space station. they'll be joining american scott kelly and two other russian astronaunts. >>> meanwhile, nasa is look to go recruit few good men and women for a mission to mars. the agency's planning on a trip sometime in the 2030's, got some time. applicants must and u.s. citizen with a bachelor's agree in engineering, science, or mathematics. they also should have at least three years of experience or at least 1,000 hours pilot ago jet. >> take us about eight months to get there. and it is round trip. so just under couple of years round trip. we will be on the surface of mars for about 500 days searching for evidence of life, of past life. >> just incredible. now there have been 338 nasa astronaunts ranking in age from 26 to 46. of the 6300 who applied for the last class