Replies:
I'm not quite sure what you mean by "the sun's velocity". The sun
rotates on its axis; a point on its equator makes one rotation in about 25 Earth
days, while near the poles it requires about 31 Earth days. So a point on
the sun's equator travels at about 4500 miles/hr. (by contrast, a point on
the Earth's equator travels at about 1000 miles/hr). Additionally, the sun
(and the solar system) is revolving about the center of the Milky Way at
about 150 miles per *second* (that's over a half-million miles/hr!)
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