Pisces
Pisces in astronomy, zodiacal constellation in the northern sky between Aries and Aquarius. While it is a fairly large constellation, its stars are faint — none are brighter than fourth magnitude — making it challenging to see in the sky with the naked eye.Pisces is notable for containing the point at which the sun crosses the celestial equator into the Northern Hemisphere around March 20 each year. This point, called the vernal equinox, used to lie in Aries, but has moved into Pisces because of the Earth's wobble on its axis, called precession, according to astronomer and author Ian Ridpath.
