There isn't a specific star that's always next to the moon. The moon's position in the sky changes constantly, so it appears near different stars throughout the year.

You might be thinking of a bright star that happens to be near the moon at a specific time. To identify the specific star, you'll need to tell me:

* When you saw this star near the moon (date and time).

* Where you were located (country or city).

With that information, I can use an astronomy app or website to identify the star for you.