When a satellite blocks light from a star, it's called an occultation.

Here's a breakdown:

* Occultation: This term refers to when one celestial object passes in front of another, blocking its light.

* Satellite: An artificial object orbiting Earth.

* Star: A giant ball of hot gas that emits light.

When a satellite passes in front of a star, the star's light is temporarily blocked, creating a brief dip in brightness. This can be observed by astronomers and is sometimes used to study the satellite itself or the star's light.