‘The Light Ages’ illuminates the science of the so-called Dark Ages
The book re-creates the life of a monk who contributed to astronomy
![astrolabe](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2021/01/011621_bookreview_ts_lightages_feat.jpg?fit=1030%2C580&ssl=1)
The Middle Ages saw advances in the making of scientific instruments, such as the astrolabe (a replica of a medieval one is shown), a device used to measure the positions of astronomical objects.
Brian Maudsley/Alamy Stock Photo