What is in this image? Describe it in Simple English. As plain and simple as possible. No complex words, no long sentences. Still make sure to describe everything in the image.

This is a picture of a funny scene. There are three space aliens in a room. They are at a table. The table has some books and a basketball on it. One alien has a pie and another has a test tube. There is also a sheep standing on the table. The sheep looks confused. One alien is measuring the sheep with a ruler. Outside a big window, you can see stars and planets. It looks like they are in a spaceship. The picture is black and white.