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# Long description

Four pencil drawings of astronomical objects are shown. The drawings are negative, so that darker shading indicates a brighter source. The nature of each object is not indicated.

The top-left image shows an elongated, asymmetric object, with rings that become more prominent in the middle.

The top-right image shows a cone-shaped object. A section at the point of the cone appears separated by a waist, and a dark spot is visible at its apex.

The bottom-left image shows an elongated structure that becomes progressively darker in the middle, before becoming lighter again.

The bottom-right image shows a circular structure with bands or rings, with rays emanating from its edges. Two large holes appear in its centre in which points are drawn.