What is the moon phase today? Today, Feb. 13, 2025, the moon is 15 days old and is in the Full Moon phase of its lunar cycle. It is 99% illuminated. Moon phases reveal the passage of time in the ...

Understand the moon phases and you can wager a pretty good guess for when the next full moon is just by looking up.

It can be seen with the naked eye on a very clear autumn night as a faint cigar-shaped object roughly the apparent angular diameter of our Moon. A century ago, Edwin Hubble first established that ...