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Physics News Update
Number 123 (Story #1), April 9, 1993 by Phillip F. Schewe and Ben Stein

INTERSTELLAR DUST HAS BEEN DETECTED for the first time. Dust from within the solar system has been observed by numerous satellites and even by high-flying aircraft, but scientists analyzing data recorded by the Ulysses spacecraft (now past its encounter with Jupiter), particularly the directionality and speed (in excess of the escape velocity of the solar system) of the dust, conclude that some of the micron-sized specks come from outside the solar system. Certain other dust particles detected by Ulysses appear to be coming from Jupiter itself in periodic bursts. (Nature, 1 April 1993.)