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... , long-tank, thrust-augmented Thor-Delta booster. Satellite entered transfer orbit with 237 796-km (147 759.6-mi) apogee, 246-km (152.9-mi) perigee, 7365-min (5.11-day ... fired Sept. 25 to place Explorer 47 in circular orbit with 235 639-km (146 419.3-mi) apogee, 201 599-km (125 267.8-mi) perigee, 12.3-day period, and 17.2° inclination. By Sept. 25, 10 experiments had been commanded on and were operating satisfactorily. Three remaining experiments would be turned on about Oct. 5. Explorer 47 ...

... time (22 hrs 5 min), and longest time in lunar orbit (147 hrs 48 min). Earlier in year Apollo 16 also produced ... at all levels in atmosphere. Other unmanned missions included Explorer 47 (IMP) to study earth-sun interactions from orbit halfway to moon, ... accidents dropped from 203 in 1971 to 190 in 1972. ''(Interavia, 3/73, 201)'' NASA published Physics of the Space Environment (NASA SP-305). ...

... News of recent launches and forthcoming launch preparations. 47 - INTERNATIONAL Space Report Space news from around the ... plans for the new programme. 147 - MIR MISSION REPORT Neville Cooper describes ... 201 - EURO SPACE CENTER An account of this unique educational leisure centre, located in Belgium, by Theo Pirard. 204 - SL9 IN VIRTUAL SPACE July's comet impact with Jupiter in 3 ...

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