Perseus

Table of Contents

Introduction References & Edit History Related Topics

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Colorful winter sunset

What's the Difference Between a Solstice and an Equinox?

Discover

Cathedrale St.Jean in Lyon, France has a 14th-century astronomical clock that shows religious feast days till the year 2019; Perpetual Calendar

Ten Days That Vanished: The Switch to the Gregorian Calendar

King Cobra snake in Malaysia. (reptile)

9 of the World’s Deadliest Snakes

Baseball laying in the grass. Homepage blog 2010, arts and entertainment, history and society, sports and games athletics

10 Greatest Baseball Players of All Time

Close up of books. Stack of books, pile of books, literature, reading. Homepage 2010, arts and entertainment, history and society

12 Novels Considered the “Greatest Book Ever Written”

Eye. Eyelash. Eyeball. Vision.

7 Vestigial Features of the Human Body

Figure 13: A Maxim machine gun, belt-fed and water-cooled, operated by German infantrymen, World War I.

7 Deadliest Weapons in History

Internet http://www blue screen. Hompepage blog 2009, history and society, media news television, crowd opinion protest, In the News 2009, breaking news

Who Invented the Internet?

Perseus: Related Content

Written and fact-checked by The Information Architects of Encyclopaedia Britannica

News •

Astronomers discover giant 'bridge' in space that could finally solve a violent galactic mystery • Apr. 30, 2025, 12:23 AM ET (Live Science)

Astronomers discover dark matter 'bridge' linking colliding galaxies: 'This is the missing piece we've been looking for.' • Apr. 23, 2025, 8:04 AM ET (Space)

Topics

Orion Pleiades Ursa Minor Ursa Major Cassiopeia Ophiuchus Gemini Sagittarius Crux Taurus

Quiz

Ursa major constellation illustration art. (Big Dipper) stars, space, night sky)

Stars: Explosions in Space