Travels around the world

I always travel around the world. Sometimes in group sometimes not. You have had cursed me, praised me, admired me and wished you could sat on me. I am too far away for you to reach. However you can feel me wherever you are. When I am sad, you can touch my tears. When I am angry, you can hear me throwing a tantrum. When I am happy, you can see the calm side of me. What am I?