Traditional Culture Encyclopedia - Photography major - Does anyone know what this is? Similar to a crystal ball

Does anyone know what this is? Similar to a crystal ball

............................, this is the authentic moon in the sky.

This set of pictures can be searched? A 17-year-old photographer's love for the universe ",holding the moon model in the picture.

However, modern society can also meet the demand for the moon. Searching for "Moon Lamp" on Taobao is a surprise.

If you don't need a wall lamp, you can search for "? "Moon crystal, more expensive?