Project Loon is a Google X project that aims to provide internet access to rural and remote areas using high-altitude balloons. The balloons float in the stratosphere and work together to form a wireless network with long-range radio links. This network is used to beam an internet connection down to users on the ground. Each balloon is made of thin polyethylene plastic and is powered by an onboard solar panel. The goal is for the balloons to autonomously navigate the winds aloft to stay connected to each other and form a linked network to beam internet connectivity back down to earth.