Do you know what a lunar eclipse is? It's when the moon moves in front of the sun and blocks its light for a little while. Well, a lunar occultation is kind of like that, but with a different planet.
You see, there's this planet called Venus that is very bright and can be seen in the sky at night. Sometimes, if you’re really lucky, you can see the moon and Venus close to each other in the same part of the sky.
When this happens, if you look carefully, you might see the moon move closer and closer to Venus until it looks like Venus disappears behind the moon. Don't worry though, Venus isn't really gone forever, it's just hiding behind the moon for a little while.
This is called a lunar occultation and it's pretty cool because it’s like the moon is playing a game of hide-and-seek with Venus. It's not something that we get to see very often, so it's very special when it happens!