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Eridanus is best seen from November through February.
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Eridanus

Eridanus is known as the Celestial River. It most often related to the Nile or Euphrates Rivers because they were so important to ancient civilizations. Eridanus is the second longest constellation in the night sky.

The brightest star is called Achernar. This star is at the southern end of the constellation, and is rarely seen in the Northern Hemisphere. The other tip is held by Cursa. It sets next to the bright star Rigel in the constellation Orion.

With some difficulty Eridanus can be traced through the sky. Once you find Cursa, follow the stars east and south. Most of the Northern Hemisphere can only see the top half of this long figure. Those living below the Equator can continue through the strands of lights until they reach Achernar.

There are over three dozen faint galaxies within Eridanus.

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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part is sponsored in part through grants from federal agencies (NASA and NOAA), and partnerships with affiliated organizations, including the American Geophysical Union, the Howard Hughes Medical Institute, the Earth System Information Partnership, the American Meteorological Society, the National Center for Science Education, and TERC. The American Geophysical Union and the American Geosciences Institute are Windows to the Universe Founding Partners. NESTA welcomes new Institutional Affiliates in support of our ongoing programs, as well as collaborations on new projects. Contact NESTA for more information. NASA ESIP NCSE HHMI AGU AGI AMS NOAA