PreviousDays✦THE WIKI
← All historyTHE ARCHIVE · 2 STORIES

Before 1500

Ancient worlds, enduring ideas.

PICK A CHAPTER

History doesn’t stand still.

FOLLOW YOUR CURIOSITYSee science & discoveries in the image atlas ↗
MOMENTS FROM THIS ERA

Meet the moments.

2 illustrated stories · growing daily
Two Song-dynasty observers watch a bright point of light above a tiled city at dawn.Science & discoveries

The Chinese guest-star observation of 4 July 1054

A Chinese court observation dated 4 July 1054 describes a brilliant guest star near Tianguan. Modern astronomy connects the transient light with the supernova whose expanding remains form the Crab Nebula.

Step into the story
Late Roman observers watch a darkened Sun above classical buildings, with faint stars and an amber horizon.Science & discoveries

The total solar eclipse of 19 July 418 and its historical record

A total solar eclipse on 19 July 418 darkened part of the late Roman world. An ancient account reports visible stars and an unusual luminous object, creating a case in which a calculable astronomical event must be distinguished from interpretations of a historical text.

Step into the story
THERE’S A GAME IN EVERY DAY

Come for the story.
Stay for the challenge.

See a moment. Hear its soundtrack. Follow the clues. The daily PreviousDays quiz is waiting — and so are your friends.

Play the quiz ↗