[@Aisling] "Yes, but you don't look through it. This telescope is connected to a computer, and you see the images on screen. By the way, light years are a unit of distance. One light year is about nine trillion kilometers. Probably, we won't be able to travel to planets that obrit other stars... they are lightyears away. That means that even the light takes years to reach them, although light is the fastest thing out there," Ioan explained.