Eridanus can refer to:

Rivers

Eridanos (mythology) The river Eridanos or Eridanus (; grc, Ἠριδανός) is a river in northern Europe mentioned in Greek mythology and historiography. Mythical stream Hesiod, in the ''Theogony,'' calls it "deep-eddying Eridanos" in his list of rivers, the ...

(or Eridanus), a river in Greek mythology, somewhere in Central Europe, which was territory that Ancient Greeks knew only vaguely *The Po River, according to Roman word usage *

Eridanos (Athens) Eridanos or Eridanus (; grc, Ἠριδανός) was a river in Athens mentioned in Greek mythology and historiography. Mythical stream Eridanus was the 'deep-swirling' river-god son of the Titans Oceanus and his sister-wife Tethys. He was ...

, a former river near Athens, now subterranean * Eridanos (geology), a former large river that flowed between forty million and seven hundred thousand years ago from Lapland to the North Sea through where the Baltic Sea is now

Astronomy

Eridanus (constellation) Eridanus () is a constellation in the southern celestial hemisphere. It is represented as a river. One of the 48 constellations listed by the 2nd century astronomer Ptolemy, it remains one of the 88 modern constellations. It is the sixth larges ...

, a southern constellation *

Eridanus Cluster The Eridanus Cluster is a galaxy cluster roughly from Earth, containing about 73 main galaxies and about 200 total galaxies. About 30% have Hubble classifications of elliptical or S0 and the remaining 70% are spiral or irregular. These gala ...

of galaxies in the constellation Eridanus * Eridanus II, a low-surface brightness dwarf galaxy in the constellation Eridanus *

List of stars in Eridanus This is the list of notable stars in the constellation Eridanus, sorted by decreasing brightness. See also *List of stars by constellation All stars but one can be associated with an IAU constellation. IAU constellations are areas of the sk ...

Delta Eridani Delta Eridani, which is Latinized from δ Eridani, is a star in the equatorial constellation of Eridanus. The star is visible to the naked eye and has been observed to vary in slightly brightness between magnitudes 3.51 and 3.56, alt ...

, a star * Eta Eridani, a star *

Gamma Eridani Gamma Eridani (γ Eridani, abbreviated Gamma Eri, γ Eri), formally named Zaurak , is a variable star in the constellation of Eridanus. It is visible to the naked eye with an apparent visual magnitude that varies around 2.9, and lies at ...

, a star * Eridanus Supervoid, a large-scale cosmic underdensity

Miscellaneous

Éridan (rocket) The Éridan is a two-stage French sounding rocket, which resulted from the use of the Stromboli engine of the Dragon and/or Dauphin as first and second stage. It belonged thereby to a family of solid-propellant rockets from the Belier (rocket), th ...

, a French rocket * ''Éridan''-class minehunter, a class of French naval minehunters *'' Eridanosaurus'', a rhinocerotid originally described as a crocodilian * USS ''Eridanus'' (AK-92), a ship of the United States Navy * Eridan Ampora, a character from the webcomic ''

Homestuck ''Homestuck'' is an Internet fiction series created by American author and artist Andrew Hussie in the first half of the 2010s. The fourth and best-known of Hussie's four ''MS Paint Adventures'', it originally ran from April 13, 2009 to April ...

''. {{disambiguation, geo