Though the 22-degree halo is the most common, it is just one of several atmospheric optical effects—others include sun ...

Spanning approximately 220,000 light-years across, the Andromeda Galaxy is the largest galaxy of the Local Group, which also ...

Best viewed from the Northern Hemisphere, the Lyrid meteor shower is the world's oldest known of its kind and reliably occurs ...

A breathtaking new image of the famous Eagle Nebula captures a towering pillar of gas and dust sculpted by intense stellar ...

The Lyrid meteor shower is about to reach its peak activity for April. Here's when and how to see it, along with a cloud ...