Pascal Martinez, Antennas system engineer says during the course of one day, between night and day, you can have a 20 or 30-degree change in temperature, and the antennae have to be capable of identifying a star within a seventh of a thousandth of a degree. If you remember way back from school, the very smallest line on a protractor was a degree. Well, we’re looking to take a seventh of a thousandth of that smallest unit. Each antennae measures 100 tons and will be shipped up to this high desert plain, at 5,000 meters of elevation. Once up and running, they will point up at the sky and collect waves emitted by the coldest objects in the universe, which are invisible to most telescopes.