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9 S# z6 k1 h- p7 `8 J2 b% xCOVER Rendering of the Voyager 1 spacecraft that left Earth in
" e# _% T7 d6 E H, ] j& YSeptember 1977. Last summer, when it was 18.5 billion kilometers away and still
. T7 O* {9 Z0 P" z2 r9 pembedded in the solar magnetic field, Voyager 1 entered an unexpected region, 6 X. x) b$ C6 l" V( {% X/ s
where it observed a sharp decrease of charged particles from the Sun and an
7 X4 b# |8 }* J6 ?) |# Fabrupt increase in particles from interstellar space. See pages 144, 147, and 150. Image: NASA 6 K( m* K& J: ]% \4 O m" B% [
8 W: d: }6 o9 G* K) p
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发表于 2013-7-12 12:58
发表于 2013-7-12 13:38
