Many objects in space rotate. Earth completes a spin in roughly 24 hours, while Venus takes a whopping 243 Earth days. The moon's rotational period is about 27 days. The sun, it turns out, also ...

You're not imaging it. The sun has been rising later in Illinois following the winter solstice. But the days aren't getting shorter. Here's why.

Our grasp of how stars rotate is "insufficient," with implications on our ability to understand the causes of phenomena on the sun like solar flares and coronal mass ejections that cause aurora and ...

Discover the only planet in our solar system that rotates clockwise. Learn why this 'rebel' planet spins backwards, how a ...