On August 23rd, the sky witnessed a rare and fascinating event: the famous "black moon." If you've never heard of it, rest assured, it's not a mystical sign heralding misfortune, but rather a natural ...

Did you see an aurora? Think again. It might have been a night sky phenomenon called a "Steve." Brilliant auroral displays are happening more and more frequently as the sun reaches its 11-year peak in ...

Medieval chroniclers described a strange celestial event in which the moon appeared to split apart before rejoining in the ...