Question: Which mission was completed first, Cos-B or Uhuru?

<P0-S0> COS-B was the first European Space Research Organisation mission to study cosmic gamma ray sources. <P0-S1>  COS-B was first put forward by the European scientific community in the mid-1960s and approved by the ESRO council in 1969. <P0-S2>  The mission consisted of a satellite containing gamma-ray detectors, which was launched by NASA on behalf of the ESRO on August 9, 1975. <P0-S3>  The mission was completed on April 25, 1982, after the satellite had been operational for more than 6.5 years, four years longer than planned and had increased the amount of data on gamma rays by a factor of 25. <P0-S4>  Scientific results included the 2CG Catalogue listing around 25 gamma ray sources and a map of the Milky Way. <P0-S5>  The satellite also observed the X-ray binary Cygnus X-3. <SEP> <P1-S0> Gregory John Mail (born 29 April 1978, Penrith, New South Wales) is a batsman for the New South Wales Blues. <P1-S1>  A tall opening batsman with a solid technique, he debuted for New South Wales in 1999-2000, and was awarded the prestigious Bradman Scholar award in 2000. <P1-S2>  His most successful season was 2003-04, after which he has struggled to hold a place in the first XI. <P1-S3>  Of the 12 occasions that a NSW player has carried their bat through a completed First Class innings and the 16 occasions that a player has scored a century in each innings of a First Class match, Mail is the only NSW player in history to have achieved both of these feats during his career. <SEP> <P2-S0> The Roosevelt Bridge is a major highway segmental bridge across the St. Lucie River in Stuart, Florida. <P2-S1>  Carrying U.S. Route 1 (Federal Highway; unsigned State Road 5), it was built to supersede the old Roosevelt Bridge, which had twin parallel drawbridges, one for northbound traffic (opened in 1934, ) and the other for southbound (opened in 1964, ). <P2-S2>  The new bridge, completed in 1996, is raised and much longer than the older twin drawbridges. <P2-S3>  The southbound span of the old bridge is still functional for road and boat traffic and now carries two-way road traffic for what is now known as Dixie Highway, County Road 707. <P2-S4>  The new high-level Roosevelt Bridge is approximately one mile long and is made of two three-lane sections running parallel to each other. <P2-S5>  The northbound bridge was completed first, and housed two lanes of both north and south-bound traffic until the second bridge was finished. <SEP> <P3-S0> Uhuru was the first satellite launched specifically for the purpose of X-ray astronomy. <P3-S1>  It was also known as the X-ray Explorer Satellite, SAS-A (for "Small Astronomy Satellite" A, being first of the three-spacecraft SAS series), SAS 1, or Explorer 42. <P3-S2>  The observatory was launched on December 12, 1970 into an initial orbit of about 560 km apogee, 520 km perigee, 3 degrees inclination, with a period of 96 minutes. <P3-S3>  The mission ended in March 1973. <P3-S4>  Uhuru was a scanning mission, with a spin period of ~12 minutes. <P3-S5>  It performed the first comprehensive survey of the entire sky for X-ray sources, with a sensitivity of about 0.001 times the intensity of the Crab nebula.