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By James A. Van Allen

Early in 1958, tools at the house satellites Explorer I and Explorer III printed the presence of radiation belts, huge, immense populations of lively debris trapped within the magnetic box of the earth. initially released in 1983 yet lengthy out of print, "Origins of Magnetospheric Physics" tells the tale of this dramatic and highly transformative interval in clinical and chilly battle heritage. Writing in an available type and drawing on own journals, correspondence, released papers, and the reminiscences of affiliates, area pioneer James Van Allen files a trail-blazing profession in house background. "Origins of Magnetospheric Physics" used to be his first booklet; for this paperback variation he wrote a brand new preface to introduce his "tale of interest, exploration, and discovery" to a different iteration of readers.

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Extra resources for Origins of magnetospheric physics

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H ... af'1"· ... 'rCl> Then there is always the prospect of pioneering measurements at higher and ever higher altitudes. Serious consideration is being given to the development of a satellite missile which will continuously orbit around the earth at a distance of, say, 1000 km. In the even dimmer future is the prospect of astronomical type flights. This thought was, of course, not original with me. It had been commonplace among visionaries for many years. Its inclusion in a working scien- 33 statement was cited with the New Yorker and with restrained contempt by the New York Times.

As is recounted in a later chapter, I was immediately caught up in a blizzard of activity preparing for the flight of Explorer I and still have a large body of data from our two 1957 expeditions that has not been fully reduced and published, even was course of the work. In the context of the present account, the results of our 1957 Arctic and equatorial-Antarctic expeditions rounded out the epoch of scientific investigations precursory to the discovery of the radiation belts. Courtes y of the U.

Stuhlinger's 1954 message was simple and eloquent. By virtue of ballistic missile at was realistic to expect that within a year or two a small scientific satellite could be propelled into a durable orbit around the earth. The ABMA was to use a multistage combination of military rockets with the liquidfueled Redstone as the first stage. I expressed a keen interest in performa worldwide survey of the cosmic-ray intensity above the atmosphere. This aspiration was one of long standing; a partial fulfillment of it was represented by the latitude survey with small rockets that I was engaged in at that time (chapters 2 and 3).

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