I am a nymph hated by hera changed into a bear and zues then placed her in her sky moom?

You are likely referring to Callisto, a nymph in Greek mythology. Hera, jealous of her beauty and connection to Zeus, transformed her into a bear. Later, Zeus placed her in the sky as the constellation Ursa Major, representing the Great Bear. This story highlights themes of jealousy, transformation, and the eternal nature of the stars.