4,212 bite-sized facts drawn from Wikipedia and Wikidata. Every fact links to its source.
Fact of the day 28 October 2026
Io, a moon of Jupiter, was discovered by Galileo Galilei in 1610.
Space Source: Wikipedia: Io (moon) (CC BY-SA 4.0) · Data: Wikidata Q3123 (CC0)
Random fact
The Russian Empire existed from 1721 to 1917.
History Source: Wikipedia: Russian Empire (CC BY-SA 4.0) · Data: Wikidata Q34266 (CC0)