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... which had been off for seven months while Salyut 6 was unmanned. The crew began April 11 to unload Progress 8 and activate systems and instruments including plant-life installations Oaziz ... 8 's propulsion unit for another orbit adjustment April 24. On April 25 they separated the freighter from the Salyut-Soyuz complex; on April 26 they ignited the propulsion unit at 9:54 ... 1980 March April 1980 April Apr 1 1980 1 Apr 2 1980 2 Apr 3 1980 3 Apr 4 1980 4 Apr 5 1980 5 Apr 6 1980 6 Apr 7 1980 7 Apr 8 1980 8 Apr 9 1980 9 Apr 10 1980 ...

... satellite-to-home subscription television service to compete with the three major television networks see April 8 . ComSatCorp already had a subsidiary, Comsat General, that handled its competitive activities; the FCC ... 1980 March April 1980 April Apr 1 1980 1 Apr 2 1980 2 Apr 3 1980 3 Apr 4 1980 4 Apr 5 1980 5 Apr 6 1980 6 Apr 7 1980 7 Apr 8 1980 8 Apr 9 1980 9 Apr 10 1980 ...

... series April 13. Dr. Harold Sandler, ARC project scientist, would supervise the tests. (ARC Release 80-7; NASA Release 80-43) March 1980 March April 1980 April Apr 1 1980 1 Apr 2 1980 2 Apr 3 1980 3 Apr 4 1980 4 Apr 5 1980 5 Apr 6 1980 6 Apr 7 1980 7 Apr 8 1980 8 Apr 9 1980 9 Apr 10 1980 ...

... .pdf Space News for this day. (1MB PDF) Further press comment on the USSR launch April 29 of Cosmos 1176 included a Washington Post speculation that the United States might deplore ... for more reasons than its deterrent effect on United Nations negotiations. Recalling the aborted attempt April 24-25 to rescue U.S. hostages in the Tehran embassy, the Washington Post noted ... -1) April 1980 April May 1980 May May 1 1980 1 May 2 1980 2 May 3 1980 3 May 4 1980 4 May 5 1980 5 May 6 1980 6 May 7 1980 7 May 8 1980 8 May 9 1980 9 ...

... West Germany delayed completion of analysis until recently; a GODDARD SPACE FLIGHT CENTER GSFC colloquium April 24 heard a report on the theoretical developments. The GODDARD SPACE FLIGHT CENTER GSFC team ... /80) April 1980 April May 1980 May May 1 1980 1 May 2 1980 2 May 3 1980 3 May 4 1980 4 May 5 1980 5 May 6 1980 6 May 7 1980 7 May 8 1980 8 May 9 1980 9 ...

... FLIGHT CENTER MSFC Release 80-54; NASA Release 80-48) INTELSAT announced that Niger on April 14 had become the 103rd nation to join the organization. Niger was already linked to ... 1980 March April 1980 April Apr 1 1980 1 Apr 2 1980 2 Apr 3 1980 3 Apr 4 1980 4 Apr 5 1980 5 Apr 6 1980 6 Apr 7 1980 7 Apr 8 1980 8 Apr 9 1980 9 Apr 10 1980 ... 21 1980 21 Apr 22 1980 22 Apr 23 1980 23 Apr 24 1980 24 Apr 25 1980 25 Apr 26 1980 26 Apr 27 1980 27 Apr 28 1980 28 Apr 29 1980 29 Apr 30 1980 30 May 1980 ...

... a laser beam against them.) Cosmos 1174, launched from Tyuratam April 18, apparently neared its target (Cosmos 1171, launched from Plesetsk April 3) on its first orbit and exploded. Sources said the ... 1980 March April 1980 April Apr 1 1980 1 Apr 2 1980 2 Apr 3 1980 3 Apr 4 1980 4 Apr 5 1980 5 Apr 6 1980 6 Apr 7 1980 7 Apr 8 1980 8 Apr 9 1980 9 Apr 10 1980 ...

... successful" completion of a third static test on a Space Shuttle main engine at NSTL April 19, last of a series simulating power levels necessary to abort at full power in a Shuttle launch. Previous tests were on March 31 and April 14. The engine used (2004) was fired for 10 minutes, 10 seconds with 6 minutes ... 1980 March April 1980 April Apr 1 1980 1 Apr 2 1980 2 Apr 3 1980 3 Apr 4 1980 4 Apr 5 1980 5 Apr 6 1980 6 Apr 7 1980 7 Apr 8 1980 8 Apr 9 1980 9 Apr 10 1980 ...

... as time/distance separation. (Earlier clusters developed by the NRL under codename Whitecloud were launched April 30, 1976, and December 8, 1977, into orbits having parameters nearly identical to those of ... Mar 22 1980 22 Mar 23 1980 23 Mar 24 1980 24 Mar 25 1980 25 Mar 26 1980 26 Mar 27 1980 27 Mar 28 1980 28 Mar 29 1980 29 Mar 30 1980 30 Mar 31 1980 31 April 1980 April

... last June, would appear on display at Johnson Space Center JSC 's Building 9A during April as part of a nationwide tour. NASA had just completed a month of tests on ... 1980 March April 1980 April Apr 1 1980 1 Apr 2 1980 2 Apr 3 1980 3 Apr 4 1980 4 Apr 5 1980 5 Apr 6 1980 6 Apr 7 1980 7 Apr 8 1980 8 Apr 9 1980 9 Apr 10 1980 ... 21 1980 21 Apr 22 1980 22 Apr 23 1980 23 Apr 24 1980 24 Apr 25 1980 25 Apr 26 1980 26 Apr 27 1980 27 Apr 28 1980 28 Apr 29 1980 29 Apr 30 1980 30 May 1980 ...

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