Science / NASA NASA Scraps Endeavour Launch Tomorrow Unsure when next opportunity will come By Polly Davis Doig, Newser Staff Posted May 1, 2011 10:01 AM CDT Copied Endeavour's crew, clockwise from left, Greg Johnson, Roberto Vittori,, Greg Chamitoff, Drew Feustel, Mike Fincke, and Mark Kelly, just before the launch was scrubbed, Friday, April 29, 2011. (AP Photo/John Raoux) NASA has scrapped tomorrow's tentative launch of space shuttle Endeavour, reports Space.com, saying that it needs more time to fix the broken auxiliary power unit that delayed the launch on Friday. "We're looking more toward the end of the week, maybe next weekend," says a NASA spokesman. "We won't know until tomorrow when our next launch opportunity is." The power unit is in a difficult-to-access section of the shuttle. (More NASA stories.) Report an error