Glass radiolarian model (Actinomma asteracanthion), micro-CT scan. This glass model was crafted in the mid-19th Century by father-and-son team Leopold and Rudolf Blaschka. This model is of a radiolarian, a type of marine protozoa that grow intricate mineral skeletons. This image was acquired using X-ray micro-Computed Tomography (also known as micro-CT). A micro-CT scanner projects a beam of X-rays through the sample onto a detector panel. Images are collected over a 36MB0 rotation and these are then reconstructed to form a virtual 3D model of the specimen. This virtual object that can be viewed from all angles and sliced open or digitally dissected. The colours in this image reflect differences in the types of glass used. Image by Dan Sykes.