Readers’ photos celebrate sunrises and sunsets, when the light is the most pleasing. Fifty-one photos were sent in; here are ...

The vernal equinox occurs as Mercury stands still in Pisces and several of Jupiter’s moons transit in the sky this week.

Fajr is one of Islam's five obligatory daily prayers. During Ramadan, Muslims wake up before Fajr to eat before starting ...

If there is no direct sunlight striking the cloud, it may reflect the color of the sky and appear bluish. Some of the most picturesque clouds occur close to sunrise and sunset when they can appear ...