If not for the soupy, fast-moving atmosphere on Venus, Earth's sister planet would likely not rotate. Instead, Venus would be locked in place, always facing the sun the way the same side of the moon ...

If not for the soupy, fast-moving atmosphere on Venus, Earth's sister planet would likely not rotate. Instead, Venus would be locked in place, always facing the sun the way the same side of the moon ...

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 ...

Luckily for us, our Sun is a fairly constant star. It doesn’t vary its brightness too much, leaving us to either singe or to freeze. Surprisingly, on May 1st scientists announced in Science magazine ...

The Sun turns, but not in the way a solid object would. It has no hard surface, no fixed edge to follow. What scientists describe as solar rotation comes from watching patterns move across a glowing, ...