Project Loon

How Google plans to bring the whole world online

Altitude

Filled with helium, the balloons will float at an altitude of 20km.

Balloons

Dozens of the balloons could hover over a region to bring internet to remote areas.

Internet

A small box weighing 10km contains all of the electronics, such as the radio antennas to transmit signals.

Parachute

If one of the balloons fails, a parachute brings it gently to the ground and its helium is expelled.