A comet’s plasma tail always points directly away from the Sun because __________.
a. of pressure exerted by the fast-moving charged particles in the solar wind
b. centrifugal forces throw the tail outward as the comet travels around the Sun
c. the comet’s nucleus overheats on the Sun-facing side, forcing energetic jets of gas to shoot out from the dark side
d. the tail is left behind as the comet moves through its orbit
Answer : a. of pressure exerted by the fast-moving charged particles in the solar wind
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