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COVER Rendering of the Voyager 1 spacecraft that left Earth in 2 b1 b6 ]' R# E" U2 i+ I2 e
September 1977. Last summer, when it was 18.5 billion kilometers away and still
# f2 z# l# z/ B6 Z. Y R! Y# Q2 ]4 Iembedded in the solar magnetic field, Voyager 1 entered an unexpected region, : I# v( ]3 A3 H3 a
where it observed a sharp decrease of charged particles from the Sun and an / G: n% M+ u% W: d
abrupt increase in particles from interstellar space. See pages 144, 147, and 150. Image: NASA ( P/ l( _# r y8 d) ?+ Z1 }
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发表于 2013-7-12 12:58
发表于 2013-7-12 13:38
