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Orbital Express successfully captured the [[ASTRO]] servicing satellite, and its client spacecraft [[NextSat]], after the two spacecraft had flown apart for nearly eight days. [[ASTRO]]’s primary sensor flight computer AC-2 had failed during a test on 11 May, causing the craft to lose its relative navigation. During the test, the pair of craft had undocked and separated as planned, moving apart to a distance of 10 meters (33 feet). After the failure of its AC-2 computer, [[ASTRO]] had behaved according to the protocol of its programmed fault-protection software, flying 120 meters (394 feet) away from [[NextSat]] to avoid inadvertently colliding with the satellite. However, thereafter, [[ASTRO]] had drifted approximately 6 kilometers (3.7 miles) away from [[NextSat]], requiring ground observers’ intervention to help the two craft remate successfully. [[DARPA]] planned to conduct a technical review of [[ASTRO]]’s sensor- and navigation-performance lessons and to conduct an investigation into the cause of the AC-2’s failure. The technical review would assist [[DARPA]] in planning the remaining set of Orbital Express demonstration activities, scheduled for the following weeks. ''U.S. Defense Advanced Research Projects Agency, “Orbital Express Spacecraft Successfully Rendezvous, Remate,” news release, 21 May 2007, http://www.DARPA.mil/news/2007/oe_remate.pdf (accessed 6 April 2010); Kelly Young, “Estranged Satellite Pair Reunited at Last,” New Scientist, 21 May 2007; Stephen Clark, “Computer Problem Interrupts Satellite Servicing Demo,” Spaceflight Now, 15 May 2007.'' *[[April 2007|April]] *[[May 2007|May]] [[May 1 2007|1]] [[May 2 2007|2]] [[May 3 2007|3]] [[May 4 2007|4]] [[May 5 2007|5]] [[May 6 2007|6]] [[May 7 2007|7]] [[May 8 2007|8]] [[May 9 2007|9]] [[May 10 2007|10]] [[May 11 2007|11]] [[May 12 2007|12]] [[May 13 2007|13]] [[May 14 2007|14]] [[May 15 2007|15]] [[May 16 2007|16]] [[May 17 2007|17]] [[May 18 2007|18]] [[May 19 2007|19]] [[May 20 2007|20]] [[May 21 2007|21]] [[May 22 2007|22]] [[May 23 2007|23]] [[May 24 2007|24]] [[May 25 2007|25]] [[May 26 2007|26]] [[May 27 2007|27]] [[May 28 2007|28]] [[May 29 2007|29]] [[May 30 2007|30]] [[May 31 2007|31]] *[[June 2007|June]]

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