Stephen James O’Meara’s Secret Sky appears in each issue of Astronomy magazine. This article appeared in May 2009. Subscribers have access to the complete online archive of “Stephen James O’Meara’s ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Theorigin of a mysterious glow that stretches across the nighttime sky has beenidentified by ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Fiery rose and peach sunset skies are a unique perk of our home on Earth. But what colors appear ...

The Moon reaches apogee, the farthest point from Earth in its orbit, at 5:46 A.M. EDT. At that time, our satellite will stand 251,996 miles (405,548 km) away. With the Moon sinking low in the hours ...

In the night sky, one of the easiest things for astronomy lovers to spot is the moon. This week, a unique phenomenon will brighten and illuminate the moon for many to see with the naked eye. According ...

Mercury, the speedy little planet closest to the sun, is making a special twilight appearance this month as a bright pink dot low in the sky. The show started on Feb. 8 and will continue until Feb. 21 ...