MOLINE, Ill. — Have you ever experienced rain on a sunny day with no clouds? No, the world isn't coming to end, nor is the simulation glitching. What you experienced is called a “sun shower ...

A video capturing a stunning cloud ... area with no trees, such as a beach." They're also known as "anti-crepuscular rays if the shadow reaches a point 180 degrees opposite the sun, as this ...

In a study published in June in the journal Icarus, Dr. de Pater and her colleagues named the prime suspect in this cloud cleansing: the sun. Neptune, a frigid planet decorated with supersonic ...