Cosmic Exploration · discovery

The Galilean Moons

1610 · Galileo Galilei

Year
1610

Description

Four points of light beside Jupiter that moved night to night. They orbited something other than the Earth, which the geocentric model had no room for.

Discoverer

Referenced by

researcher

Open on the Cosmic Exploration shelf — the interactive card, the filters, and everything alongside it.

From the Discoveries database in Notion, last edited 2026-08-15. This page is the row, rendered by the build; nothing on it is written by hand.