[Guille]

I just realised that the chat session will be 6 in the morning here in Spain, so, in case I forget to have my alarm clock at that time, or just don't feel like to get up so early, (If I go it won't be since the begining: after one hour or so..), well, I am posting my short answers:

1. Why is Dark Energy needed?

Dark energy isn't "needed": it is just a thereticall physics "invention" to explain why the universe is growing+accelerating+this size....and others. Isn't it? But there are other explenations of scientists and people like us (I met some in other forums) for these things.

2. What is the proof that Dark Energy exists?

Of what I know, there is no proof that dark energy exists (neither dark matter). The only thing defenders of it base on is it's use (which is infinitly paradoxical: this1 because this2 because this1...).

3.What are the paradoxes that Dark Energy resolves?

I didn't know that dark energy solved paradoxes........what I do know is that it leads to some...

4. Are there other explanations for these paradoxes?

-up-

5. What exactly is energy anyway?

If someone can answer this question correctly, detailed, exact, scientificlly, philosofically......Then that person is half way to explain everything (=create a TOE). This is the question I make to my self all the days of my life, just getting up-and when I go to sleep (If I can do so...).

Thats pretty much it.