it's a "Cheshire cat smile" eclipse. This rare celestial event happens, well, once in a blue moon. In areas that fall in the path of annularity, people will see a celestial ring of fire ...

Although many lunar phenomena are one-night-only events, a ring around the moon is much less elusive. Also known as a lunar halo, a bright white ring of light around the moon can appear anytime ...

For North Americans, this is an eye-catching sight, visible even from brightly lit cities.

This celestial event is sure to make you smile. In the wee hours of this Thursday morning, the night sky will light up with a unique illusion courtesy of an alignment between Venus and the moon.

Experts say that rings around the moon can pop up from time to time, but have you ever seen one in Denver? On Sunday night, between 9:15 and 9:35 p.m., a lunar halo appeared above the metro area.

These observations prompted Mario Sucerquia, an astrophysicist at France's Grenoble Alpes University, and colleagues to investigate whether moon rings could be stable at all. A 2022 study ...

The three heavenly bodies will appear to form a smile in the eastern sky. The closest new supermoon of the year follows that on April 27. The moon will be 221,917 miles from Earth, nearly 17,000 ...