Astrology
Horoscope
noun
占い is "fortune telling." Star fortune telling is when you use the stars for fortune telling. That's known as astrology or horoscope.
The reading is the words 星 and 占い put together into one. Did you foresee that one coming?
今日の星占いで、頭にたんこぶができないように気をつけた方がいいと出ていたの。
Today’s horoscope says I should be careful of getting a bump on my head.