Engineers at NASA’s Goddard Space Flight Center are developing an in-orbit test bed to validate techniques for refueling satellites that weren’t designed to be refueled, using procedures growing out of the experience gained servicing the Hubble Space Telescope. Preston Burch, the Hubble program manager, said Jan. 11 that the experiment would use the Canadian-built Special Purpose Dexterous Manipulator, known as Dextre, to simulate cutting into a spacecraft’s insulation, tapping into its fuel plumbing, and refilling its tanks to extend its service life. “We’ve already developed a prototype tool that’s pretty cool that can cut through the external skin or insulation...