Answer:
One am I, among six others: Largest, smallest, cold, dark and two brothers
What hangs in the sky by day but at night goes away?
Which is the oldest tree?
Mostly worn by women or girls, this is sometimes shiny like silver or gold, and sometimes it is made of pearls.
Touch this and you'll regret it. But if it's cold, you won't forget it. What is it?
People take me on walks and I run and have fun. What am I?