Find number abc
If 649c2 - 5b95c = ba0b5 find number abc. Multiple solutions may exist.Correct answers: 4
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British satelliteIn 1971, Britain became the sixth nation with its satellite launched into orbit by a Black Arrow rocket from Woomera, Australia. The Prospero, a Black Knight 1 satellite, had 86-kg mass at launch, 4-m diam. and transmitted on 137.56 MHz (still heard in 2000, although the onboard tape recorder failed after 730 replays on 24 May 1973). Its mission was to test solar cells and other technology experiments. Prospero is the only satellite launched by a British rocket. The Black Arrow was a 3-stage rocket only 13 m high. The Royal Aircraft Establishment developed the space launcher Black Arrow from 1964 until the project was cancelled by the British government in Jul 1971. The USSR's Sputnik was the first satellite (4 Oct 1957).« |