The Arasebo Radio Telescope

The arasebo radio telescope was used initially to sate the cosmic micro wave background, but eventually was used for the aseti i investigations. The scope collects a huge amount of light and then focuses it on a receiver. It's sort of like a satellite dis you might have in your back yard or on your roof, except it's much, much bigger. So they can collect much, much more energy and focus at all on a central place and gather that information into a signal for astronomers.