In which a star story explains why the bears in the sky have long tails

Big Dipper/Ursa Major/Callisto

A beautiful maiden called Callisto grew tired while hunting in the forest, and laid down to rest. 

The god Jupiter noticed her and was smitten with her beauty.
Jupiter's wife, Juno, became extremely jealous of Callisto.

When Callisto’s son was born, Juno knew that Jupiter must have been the father. 
Juno changed Callisto into a bear so she would no longer be beautiful.

Callisto's son, called Arcas, was adopted and grew up to be a hunter,
while Callisto continued to live in the forest.
One day Callisto saw Arcas and was so overjoyed at seeing her son that she rushed up to him,
forgetting she was a bear. Arcas thought he was being attacked and shot an arrow at Callisto.

Jupiter saw the arrow and stopped it from hitting Callisto.
To save Callisto and her son from further damage from Juno,
Jupiter changed Arcas into a bear also, grabbed them both by their tails,
and swung them both into the heavens so they could live peacefully among the stars.

The strength of the throw caused the short stubby tails of the bears to become elongated,
and the constellations of the Great Bear and the Smaller Bear have long tails to this day.

Puzzle under the tree, 2009