John Grunsfeld, an astronomer and astronaut, says that fixing the Hubble Space Telescope will be a delicate operation. In this podcast, he explains how astronauts will have to literally let their fingers do the walking when working on satellite -- and why the gloves of their space suits will play a major role in the mission's success.Podcast produced by David Levin. Interview by Rush DeNooyer. NOVA is produced by WGBH in Boston.Major funding for NOVA scienceNOW is provided by the National Science Foundation and the Howard Hughes Medical Institute. Additional funding is provided by the Alfred P. Sloan Foundation.This material is based upon work supported by the National Science Foundation under Grant No. 0229297. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.For more fun science stories, visit our Web site at http://www.pbs.org/nova/sciencenow