The Heliosphere---Blowing in the Interstellar Wind [PDF]
P. C. FrischMeasurements of the velocity of interstellar HeI inside of the heliosphere have been conducted over the past forty years. These historical data suggest that the ecliptic longitude of the interstellar flow has increased at a rate of about 0.18 degrees per year. Possible astronomical explanations for these short-term variations in the interstellar gas entering the heliosphere are presented.View original: http://arxiv.org/abs/1210.7214
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