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I have to say that this book is one of the best gifts I have received… Although I don’t know were is it now, sorry dad, I think I need to get a copy…

It’s a so called popular science book by Stephen Hawking, its an attempt to explain a very wide range of subjects in cosmology. It talks about BigBang, Black Holes, Stars, Time, etc.

I think that the more interesting concept for me was the one of Light Cones, it really helps you to understand many things!

I also remember that previous to that book I had the idea that time travel was possible  (I still think that time pseudo-travel to the future will be possible, but definitely not to the past), and the solution to the question was soooo simple: If time travel were possible, we would be full of visitors from the future, and we are not! It was so simple that I was blind to see it.

I really recommend it.