Solar wind slows farther away from the Sun

Measurements taken by the Solar Wind Around Pluto (SWAP) instrument aboard NASA's New Horizons spacecraft are providing important new insights from some of the farthest reaches of space ever explored. Astronomers now show how the solar wind -- the supersonic stream of charged particles blown out by the Sun -- evolves at increasing distances from the Sun.

from Solar System News -- ScienceDaily https://ift.tt/2YaPSrL
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