Re: Will someone tell me why we need Triana when...
I think that a low-altitude shot of the Earth in real time would be almost as interesting, and a lot easier and cheaper to accomplish (a camera mounted somewhere on the ISS and linked to the ground when there is sufficient bandwidth).
One of our local cable channels used to carry the NASA channel much of the time. During Shuttle missions, it was not uncommon for NASA to play footage of the Earth going by, sometimes in real time, sometimes from file footage. I could watch it for hours. A small inset screen showing where I was looking on a map would have been nice.