CAPE CANAVERAL, Fla. — Astronauts took their second spacewalk in two weeks Thursday, taking care of some long overdue radiator work outside the International Space Station. Commander Jeffrey Williams used a power drill-type tool to fold up a 44-foot-long thermal radiator that’s no longer in use. Spacewoman Kate Rubins floated nearby, making sure Williams was clear of the panel as it slowly retracted, accordion style. Syncronex: Metered read more