SpaceX and the Rise of Private Rockets

On December 21, 2015, a SpaceX Falcon 9 rocket launched a satellite into orbit, and then did something no orbital rocket had ever done before: its first-stage booster flew itself back down and landed upright on a launchpad, intact and reusable. Before that moment, every major rocket booster in history had been used once and discarded or burned up. That single landing helped drop the cost of reaching orbit dramatically and reshaped how satellite technology and GPS infrastructure get built today.

- Why reusable rockets changed the economics of launching satellites - How SpaceX's Falcon 9 and Starlink connect to GPS and satellite internet - The difference between government-run and private space programs - How to evaluate claims about the future of commercial spaceflight

Before reusable boosters, launching a satellite meant building an entire rocket that would be destroyed or lost after a single use, similar to throwing away an airplane after one flight. NASA estimated in the 2010s that a Falcon 9 launch cost around $60 million when expendable, but SpaceX has said that reusing a booster can cut costs substantially since the most expensive part, the engines and structure, gets flown again. By 2023, some individual Falcon 9 boosters had flown more than 15 missions each, a scale of reuse that didn't exist in orbital rocketry before SpaceX.

SpaceX doesn't just launch other companies' satellites, it also built its own satellite network called Starlink, designed to beam internet access down to homes, ships, and remote areas that don't have cable or fiber lines. Unlike GPS satellites, which orbit at about 12,550 miles up and mainly broadcast location signals, Starlink satellites orbit much lower, around 340 miles up, in what's called low Earth orbit. As of the mid-2020s, SpaceX has launched thousands of Starlink satellites, making it one of the largest satellite constellations ever built.

For most of the Space Age, from Sputnik in 1957 through the Space Shuttle era, orbital launches were run almost entirely by national governments like the U.S. (NASA), the Soviet Union, and later Russia, Europe, China, and India. Private companies mostly built parts for those government programs rather than launching their own rockets. That began changing in the 2000s when NASA started paying private companies, including SpaceX, to develop and operate their own rockets and spacecraft under contracts like Commercial Resupply Services, which SpaceX first flew successfully in 2012. This let NASA focus government money and astronauts on deep-space missions while private companies handled more routine cargo and satellite launches.