Add Yahoo as a preferred source to see more of our stories on Google. Moon phases reveal the passage of time in the night sky. Some nights when we look up at the moon, it is full and bright; sometimes ...

Add Yahoo as a preferred source to see more of our stories on Google. March’s “worm moon” sets behind Rocca Calascio castle and village in L’Aquila, Italy. Photograph by Lorenzo Di Cola, ...

The moon is becoming more lit up each night as we progress through the lunar cycle. The lunar cycle is a series of eight unique phases of the moon's visibility. The whole cycle takes about 29.5 days, ...

Can you see anything tonight?