Autumn Sky and the Eridano

The story in this one is odd but simple.

It’s about the Autumn Sky, in this time of the year the constellation of "Eridano" appears in the sky.
SO... "Eridano" is the name of the river that Hades crossed in the greek mithology, abode of the Dead.

Also in the sky at the "zenith" (the zone of the sky at the top) the Pegasus constellation is quite prominent.