When we think about orbits, we usually picture the Earth zooming around the sun. But does the sun just sit there? Or is it on its own journey? I asked my friend Guy Worthey. He’s a space scientist at ...

The winter solstice, famously the shortest day of the year, is nearly three weeks behind us. So why has the sun been rising later than it did on Dec. 21? Like much of our day and night cycles, the ...

The time it takes for the sun to completely rotate depends where on the sun you are measuring.

CLEVELAND — With so much focus on the total solar eclipse right now, I thought some stellar solar system facts would shake up your universe. Let me take you back to grade school and the solar system ...

The sun : a slowly rotating star / J.-P. Zahn -- What is coming : issues raised from observation of the shape of the sun / J.-P. Rozelot -- Effects of rotation on stellar p-mode frequencies / M. J.