Science: Shocks from the Sun

Early last week the bright face of the sun showed even brighter spots, each of them a gigantic explosion tossing gas and magnetism deep into space. Blasts of charged particles crossed millions of miles of space and smashed into the earth's magnetic field. In each case there was no warning of the approaching storm; it hit the earth with a sharp initial pulse, lasting about a minute and followed by violent fluctuations.

The sharp first pulse has long been a puzzle. But last week Dr. Arthur Kantrowitz of the Avco Research Laboratory at Everett, Mass,...

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