Department of Energy Argonne National Laboratory Office of Science NEWTON's Homepage NEWTON's Homepage
NEWTON, Ask A Scientist!
NEWTON Home Page NEWTON Teachers Visit Our Archives Ask A Question How To Ask A Question Question of the Week Our Expert Scientists Volunteer at NEWTON! Frequently Asked Questions Referencing NEWTON About NEWTON About Ask A Scientist Education At Argonne Sun Speed
Name: williamh
Status: N/A
Age: N/A
Location: N/A
Country: N/A
Date: 1993 - 1999

What is the velocity of the sun?

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!)

Ron Winther

Click here to return to the Astronomy Archives

NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators, sponsored and operated by Argonne National Laboratory's Educational Programs, Andrew Skipor, Ph.D., Head of Educational Programs.

For assistance with NEWTON contact a System Operator (, or at Argonne's Educational Programs

Educational Programs
Building 360
9700 S. Cass Ave.
Argonne, Illinois
60439-4845, USA
Update: June 2012
Weclome To Newton

Argonne National Laboratory
n b