Voyages to the Beginning of Time

I found this real cool article on the NASA website, a little about time travel. This was the first time ever that I actually understood the concept of travelling back in time. I know now, what actually is the meaning of time travel, how it works and most importantly, WHEN it works.

Here's the link: http://www.nasa.gov/mission_pages/exploration/whyweexplore/Why_We_24.html