Forward I am heavy, but backward I am not. What am I?

I?m tall when I?m young, and I?m short when I?m old, what am I?

I?m lighter than what I am made of, and more of me is hidden than is seen. What am I?

I?m a god, a planet, and I measure heat. What am I?

I can never be thrown but I can be caught. Ways to lose me are always being sought. What am I?

You bury me when I?m alive and dig me up when I?m dead. What am I?

I have branches, but no fruit, trunk or leaves. What am I?

It is not in your tummy but somewhere above. It is thought by many to be the symbol of love. What am I?

A seed with three letters in my name. Take away two and I still sound the same. What am I?

This riddle is about a room, but it won?t really make you think. It?s the one with a dishwasher, a fridge-freezer, oven, and sink. What am I?

I am the beginning of everything, the end of everywhere. I?m the beginning of eternity, the end of time and space. What am I?

I have billions of eyes, yet I live in darkness. I have millions of ears, yet only four lobes. I have no muscle, yet I rule two hemispheres. What am I?

I can wave my hands at you, but I never say goodbye. You are always cool when with me, even more so when I am high! What am I?

Every night I?m told what to do, and each morning I do what I?m told. But I still don?t escape your scold. What am I?

I follow you all the time and copy your every move, but you can?t touch me or catch me. What am I ?