This medieval chronicle, which covers the historical period from earliest times to AD 1140, contains a number of records of celestial phenomena. These include aurorae, comets and meteor showers ...

This week, see how new telescopes may reshape how astronomers view the cosmos, discover forgotten medieval cities, learn about fireflies’ early evolution, and more.

“Charlottesville shocked a lot of us who teach the medieval period, seeing white supremacists using things like medieval runes and these images of warfare and weapons. It was the weaponizing of the ...