Sarah Lewin, associate editor at, discusses SpaceX's upcoming launch of two satellites that will try to beam internet around the globe from space.

Lewin says the more profound part of the mission is the satellites are "non-geostationary," which means unlike other satellites in space, they will move while broadcasting a signal. The Wall Street Journal recently estimated that SpaceX expects to have 40 million subscribers to the service by 2025, amounting to $30 billion in revenue a year.