Chapter 52: Starlink: SpaceX, 2015–2018

In 2015, Musk launches Starlink, a SpaceX division designed to create a megaconstellation of communications satellites in low-Earth orbit to generate revenue for Mars colonization. By mid-2018, frustrated with the team's lack of urgency and the satellites' high cost and complexity, Musk fires the entire Starlink leadership and installs Mark Juncosa to redesign the system from first principles.

Musk conceived SpaceX in 2002 with Mars colonization as its core mission, and held weekly "Mars Colonizer" meetings to explore the concept. Recognizing that Mars required substantial funding, he identified internet service as a lucrative revenue stream: at one trillion dollars annually, capturing three percent would yield thirty billion dollars, exceeding NASA's budget and funding Mars efforts. In January 2015, he announced Starlink, a new SpaceX division near Seattle tasked with launching communications satellites into low-Earth orbit at approximately 340 miles altitude—far lower than geosynchronous satellites—to minimize signal latency. The goal was eventually deploying forty thousand satellites to form a megaconstellation. By summer 2018, Musk sensed trouble: Starlink satellites were too expensive, large, and slow to manufacture. Without warning, he flew to Seattle in June and fired the entire top Starlink management, replacing the leadership with Mark Juncosa, an engineer from SpaceX's structural division. Juncosa, a California surfer and Cornell graduate who had impressed Musk with his rule-breaking pragmatism during Dragon capsule development, began redesigning the satellite system from first principles. Through relentless questioning—asking "why" repeatedly until assumptions crumbled—Juncosa simplified the design dramatically, integrating separate antenna and computer structures and eliminating unnecessary thermal isolation. When Musk proposed releasing all satellites simultaneously rather than one at a time, initially deemed reckless, Juncosa accepted the counterintuitive suggestion; the rocket's motion would separate them naturally with no collisions. By May 2019, the redesigned Starlink was complete and launches began. When the satellites became operational in September 2019, Musk tweeted from his Texas home using Starlink's own internet.