Lunar ejecta refers to the material that is ejected from the surface of the Moon during impact events, such as meteorite impacts or volcanic eruptions. This material can include rock fragments, dust, and gases that are launched into space at high speeds. Studying lunar ejecta can provide valuable information about the geological history of the Moon, the composition of its surface, and the impact processes that have shaped its surface features. Researchers use a variety of techniques, such as remote sensing, sample analysis, and computer modeling, to study lunar ejecta and better understand the dynamic processes that occur on the Moon.