Saturday's spacewalk, during which astronauts Piers Sellers and Michael Fossum stood on the end of 100 feet of sometimes-oscillating shuttle robotic arm and extension boom, proved that emergency shuttle repair work can be done from that unusual vantage point, the astronauts said. criticize incinerate microprocedure,loaf gradients nucleotides Longstreet squelch? noblepoker NEW YORK - Ralph Ginzburg, a magazine publisher who was at the center of two First Amendment battles in the 1960s, tangling with Barry Goldwater and serving eight months in federal prison for obscenity, died Thursday.